Biak weather by month

Check out Biak weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Biak (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
30°C maximum daytime temperature in January in Biak30
30°C maximum daytime temperature in February in Biak30
30°C maximum daytime temperature in March in Biak30
30°C maximum daytime temperature in April in Biak30
30°C maximum daytime temperature in May in Biak30
30°C maximum daytime temperature in June in Biak30
30°C maximum daytime temperature in July in Biak30
30°C maximum daytime temperature in August in Biak30
30°C maximum daytime temperature in September in Biak30
31°C maximum daytime temperature in October in Biak31
31°C maximum daytime temperature in November in Biak31
30°C maximum daytime temperature in December in Biak30
Min temperature (night-time)
22°C minimum night-time temperature in January in Biak22
23°C minimum night-time temperature in February in Biak23
23°C minimum night-time temperature in March in Biak23
23°C minimum night-time temperature in April in Biak23
23°C minimum night-time temperature in May in Biak23
23°C minimum night-time temperature in June in Biak23
23°C minimum night-time temperature in July in Biak23
22°C minimum night-time temperature in August in Biak22
22°C minimum night-time temperature in September in Biak22
23°C minimum night-time temperature in October in Biak23
23°C minimum night-time temperature in November in Biak23
23°C minimum night-time temperature in December in Biak23
Heat & Humidity
High heat & humidity in January in BiakH
High heat & humidity in February in BiakH
High heat & humidity in March in BiakH
Very high heat & humidity in April in BiakVH
Very high heat & humidity in May in BiakVH
High heat & humidity in June in BiakH
High heat & humidity in July in BiakH
High heat & humidity in August in BiakH
High heat & humidity in September in BiakH
Very high heat & humidity in October in BiakVH
Very high heat & humidity in November in BiakVH
High heat & humidity in December in BiakH
Sea temperature
29°C sea temperature in January in Biak29
29°C sea temperature in February in Biak29
29°C sea temperature in March in Biak29
29°C sea temperature in April in Biak29
29°C sea temperature in May in Biak29
29°C sea temperature in June in Biak29
29°C sea temperature in July in Biak29
29°C sea temperature in August in Biak29
29°C sea temperature in September in Biak29
29°C sea temperature in October in Biak29
29°C sea temperature in November in Biak29
29°C sea temperature in December in Biak29

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Biak

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
12 hours of daylight per day in January in Biak12
12 hours of daylight per day in February in Biak12
12 hours of daylight per day in March in Biak12
12 hours of daylight per day in April in Biak12
12 hours of daylight per day in May in Biak12
12 hours of daylight per day in June in Biak12
12 hours of daylight per day in July in Biak12
12 hours of daylight per day in August in Biak12
12 hours of daylight per day in September in Biak12
12 hours of daylight per day in October in Biak12
12 hours of daylight per day in November in Biak12
12 hours of daylight per day in December in Biak12
UV Index (Maximum)
UV (maximum) index 11+ (Extreme) in January in Biak11
UV (maximum) index 11+ (Extreme) in February in Biak11
UV (maximum) index 11+ (Extreme) in March in Biak11
UV (maximum) index 11+ (Extreme) in April in Biak11
UV (maximum) index 11+ (Extreme) in May in Biak11
UV (maximum) index 11 (Extreme) in June in Biak11
UV (maximum) index 11 (Extreme) in July in Biak11
UV (maximum) index 11+ (Extreme) in August in Biak11
UV (maximum) index 11+ (Extreme) in September in Biak11
UV (maximum) index 11+ (Extreme) in October in Biak11
UV (maximum) index 11+ (Extreme) in November in Biak11
UV (maximum) index 11+ (Extreme) in December in Biak11

Rainfall in Biak

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
21 days with some rainfall in January in Biak21
20 days with some rainfall in February in Biak20
21 days with some rainfall in March in Biak21
19 days with some rainfall in April in Biak19
20 days with some rainfall in May in Biak20
19 days with some rainfall in June in Biak19
20 days with some rainfall in July in Biak20
20 days with some rainfall in August in Biak20
17 days with some rainfall in September in Biak17
17 days with some rainfall in October in Biak17
17 days with some rainfall in November in Biak17
20 days with some rainfall in December in Biak20
Average monthly rainfall (mm)
261 mm monthly rainfall in January in Biak261
266 mm monthly rainfall in February in Biak266
275 mm monthly rainfall in March in Biak275
215 mm monthly rainfall in April in Biak215
258 mm monthly rainfall in May in Biak258
212 mm monthly rainfall in June in Biak212
241 mm monthly rainfall in July in Biak241
230 mm monthly rainfall in August in Biak230
210 mm monthly rainfall in September in Biak210
200 mm monthly rainfall in October in Biak200
201 mm monthly rainfall in November in Biak201
240 mm monthly rainfall in December in Biak240

More about Biak

Biak by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Indonesia

TUI sale: up to £300 off holidays in 2026/2027

  • Save up to £300 on holidays (Jan 2026-Nov 2027)
  • Book online with TUI Black Friday discount code
  • Sign up to myTUI. Discount varies by spend. T&Cs apply
Go to TUI deal >>

Expires at 23:59 on Tuesday 2nd Dec 2025 · View all TUI offers

TUITUI deal finder

The climate guide for Indonesia (Biak) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Biak?

Biak has a hot tropical climate with no dry season.

Biak weather in January

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in January and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 21 days with some rainfall and typically 261 mm of rainfall in the month.

  • 30°C maximum daytime temperature in January in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 21 days with some rainfall in January in Biak21
    21 days with some rainfall
  • 22°C minimum night-time temperature in January in Biak22
    22°C min night temperature
  • 12 hours of daylight per day in January in Biak12
    12 hours of daylight per day
  • High heat & humidity in January in BiakH
    High heat & humidity
  • 261 mm monthly rainfall in January in Biak261
    261 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in January in Biak29
    29°C sea temperature

Back to months

Biak weather in February

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in February and high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 20 days with some rainfall and typically 266 mm of rainfall in the month.

  • 30°C maximum daytime temperature in February in Biak30
    30°C max day temperature
  • 4 hours of sunshine per day
  • 20 days with some rainfall in February in Biak20
    20 days with some rainfall
  • 23°C minimum night-time temperature in February in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in February in Biak12
    12 hours of daylight per day
  • High heat & humidity in February in BiakH
    High heat & humidity
  • 266 mm monthly rainfall in February in Biak266
    266 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in February in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in February in Biak29
    29°C sea temperature

Back to months

Biak weather in March

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in March and high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 21 days with some rainfall and typically 275 mm of rainfall in the month.

  • 30°C maximum daytime temperature in March in Biak30
    30°C max day temperature
  • 4 hours of sunshine per day
  • 21 days with some rainfall in March in Biak21
    21 days with some rainfall
  • 23°C minimum night-time temperature in March in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in March in Biak12
    12 hours of daylight per day
  • High heat & humidity in March in BiakH
    High heat & humidity
  • 275 mm monthly rainfall in March in Biak275
    275 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in March in Biak29
    29°C sea temperature

Back to months

Biak weather in April

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in April and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 215 mm of rainfall in the month.

  • 30°C maximum daytime temperature in April in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 19 days with some rainfall in April in Biak19
    19 days with some rainfall
  • 23°C minimum night-time temperature in April in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in April in Biak12
    12 hours of daylight per day
  • Very high heat & humidity in April in BiakVH
    Very High heat & humidity
  • 215 mm monthly rainfall in April in Biak215
    215 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in April in Biak29
    29°C sea temperature

Back to months

Biak weather in May

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in May and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 258 mm of rainfall in the month.

  • 30°C maximum daytime temperature in May in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in May in Biak20
    20 days with some rainfall
  • 23°C minimum night-time temperature in May in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in May in Biak12
    12 hours of daylight per day
  • Very high heat & humidity in May in BiakVH
    Very High heat & humidity
  • 258 mm monthly rainfall in May in Biak258
    258 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in May in Biak29
    29°C sea temperature

Back to months

Biak weather in June

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in June and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 212 mm of rainfall in the month.

  • 30°C maximum daytime temperature in June in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 19 days with some rainfall in June in Biak19
    19 days with some rainfall
  • 23°C minimum night-time temperature in June in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in June in Biak12
    12 hours of daylight per day
  • High heat & humidity in June in BiakH
    High heat & humidity
  • 212 mm monthly rainfall in June in Biak212
    212 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in June in Biak11
    11 (Extreme) UV index
  • 29°C sea temperature in June in Biak29
    29°C sea temperature

Back to months

Biak weather in July

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in July and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 241 mm of rainfall in the month.

  • 30°C maximum daytime temperature in July in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in July in Biak20
    20 days with some rainfall
  • 23°C minimum night-time temperature in July in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in July in Biak12
    12 hours of daylight per day
  • High heat & humidity in July in BiakH
    High heat & humidity
  • 241 mm monthly rainfall in July in Biak241
    241 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in July in Biak11
    11 (Extreme) UV index
  • 29°C sea temperature in July in Biak29
    29°C sea temperature

Back to months

Biak weather in August

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in August and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 230 mm of rainfall in the month.

  • 30°C maximum daytime temperature in August in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in August in Biak20
    20 days with some rainfall
  • 22°C minimum night-time temperature in August in Biak22
    22°C min night temperature
  • 12 hours of daylight per day in August in Biak12
    12 hours of daylight per day
  • High heat & humidity in August in BiakH
    High heat & humidity
  • 230 mm monthly rainfall in August in Biak230
    230 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in August in Biak29
    29°C sea temperature

Back to months

Biak weather in September

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in September and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 17 days with some rainfall and typically 210 mm of rainfall in the month.

  • 30°C maximum daytime temperature in September in Biak30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 17 days with some rainfall in September in Biak17
    17 days with some rainfall
  • 22°C minimum night-time temperature in September in Biak22
    22°C min night temperature
  • 12 hours of daylight per day in September in Biak12
    12 hours of daylight per day
  • High heat & humidity in September in BiakH
    High heat & humidity
  • 210 mm monthly rainfall in September in Biak210
    210 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Biak29
    29°C sea temperature

Back to months

Biak weather in October

Expect daytime maximum temperatures of 31°C in Biak, Indonesia in October and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 200 mm of rainfall in the month.

  • 31°C maximum daytime temperature in October in Biak31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in October in Biak17
    17 days with some rainfall
  • 23°C minimum night-time temperature in October in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in October in Biak12
    12 hours of daylight per day
  • Very high heat & humidity in October in BiakVH
    Very High heat & humidity
  • 200 mm monthly rainfall in October in Biak200
    200 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in October in Biak29
    29°C sea temperature

Back to months

Biak weather in November

Expect daytime maximum temperatures of 31°C in Biak, Indonesia in November and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 201 mm of rainfall in the month.

  • 31°C maximum daytime temperature in November in Biak31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in November in Biak17
    17 days with some rainfall
  • 23°C minimum night-time temperature in November in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in November in Biak12
    12 hours of daylight per day
  • Very high heat & humidity in November in BiakVH
    Very High heat & humidity
  • 201 mm monthly rainfall in November in Biak201
    201 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in November in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in November in Biak29
    29°C sea temperature

Back to months

Biak weather in December

Expect daytime maximum temperatures of 30°C in Biak, Indonesia in December and very high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 20 days with some rainfall and typically 240 mm of rainfall in the month.

  • 30°C maximum daytime temperature in December in Biak30
    30°C max day temperature
  • 4 hours of sunshine per day
  • 20 days with some rainfall in December in Biak20
    20 days with some rainfall
  • 23°C minimum night-time temperature in December in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in December in Biak12
    12 hours of daylight per day
  • High heat & humidity in December in BiakH
    High heat & humidity
  • 240 mm monthly rainfall in December in Biak240
    240 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in December in Biak29
    29°C sea temperature

Back to months

More about Biak

Biak by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Indonesia

TUI sale: up to £300 off holidays in 2026/2027

  • Save up to £300 on holidays (Jan 2026-Nov 2027)
  • Book online with TUI Black Friday discount code
  • Sign up to myTUI. Discount varies by spend. T&Cs apply
Go to TUI deal >>

Expires at 23:59 on Tuesday 2nd Dec 2025 · View all TUI offers

TUITUI deal finder

The climate guide for Indonesia (Biak) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Indonesia

Compare Biak with the UK

Below the Biak chart shows average maximum daytime temperature for Biak, Indonesia and the UK (London).

Maximum daytime temperature (°C)

Biak, Indonesia
UK (London)
30
7
30
7
30
10
30
13
30
17
30
20
30
22
30
22
30
19
31
15
31
10
30
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

Compare more Biak weather >>

Back to top

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^