Hawaii climate guide

Temperature in Hawaii (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
79°F maximum daytime temperature in January in Hawaii (Honolulu, Oahu)79
79°F maximum daytime temperature in February in Hawaii (Honolulu, Oahu)79
79°F maximum daytime temperature in March in Hawaii (Honolulu, Oahu)79
81°F maximum daytime temperature in April in Hawaii (Honolulu, Oahu)81
82°F maximum daytime temperature in May in Hawaii (Honolulu, Oahu)82
84°F maximum daytime temperature in June in Hawaii (Honolulu, Oahu)84
84°F maximum daytime temperature in July in Hawaii (Honolulu, Oahu)84
86°F maximum daytime temperature in August in Hawaii (Honolulu, Oahu)86
86°F maximum daytime temperature in September in Hawaii (Honolulu, Oahu)86
84°F maximum daytime temperature in October in Hawaii (Honolulu, Oahu)84
82°F maximum daytime temperature in November in Hawaii (Honolulu, Oahu)82
79°F maximum daytime temperature in December in Hawaii (Honolulu, Oahu)79
Min temperature (night-time)
64°F minimum night-time temperature in January in Hawaii (Honolulu, Oahu)64
64°F minimum night-time temperature in February in Hawaii (Honolulu, Oahu)64
64°F minimum night-time temperature in March in Hawaii (Honolulu, Oahu)64
66°F minimum night-time temperature in April in Hawaii (Honolulu, Oahu)66
68°F minimum night-time temperature in May in Hawaii (Honolulu, Oahu)68
70°F minimum night-time temperature in June in Hawaii (Honolulu, Oahu)70
72°F minimum night-time temperature in July in Hawaii (Honolulu, Oahu)72
72°F minimum night-time temperature in August in Hawaii (Honolulu, Oahu)72
72°F minimum night-time temperature in September in Hawaii (Honolulu, Oahu)72
70°F minimum night-time temperature in October in Hawaii (Honolulu, Oahu)70
68°F minimum night-time temperature in November in Hawaii (Honolulu, Oahu)68
64°F minimum night-time temperature in December in Hawaii (Honolulu, Oahu)64
Sea temperature
75°F sea temperature in January in Hawaii (Honolulu, Oahu)75
75°F sea temperature in February in Hawaii (Honolulu, Oahu)75
75°F sea temperature in March in Hawaii (Honolulu, Oahu)75
75°F sea temperature in April in Hawaii (Honolulu, Oahu)75
77°F sea temperature in May in Hawaii (Honolulu, Oahu)77
79°F sea temperature in June in Hawaii (Honolulu, Oahu)79
79°F sea temperature in July in Hawaii (Honolulu, Oahu)79
81°F sea temperature in August in Hawaii (Honolulu, Oahu)81
81°F sea temperature in September in Hawaii (Honolulu, Oahu)81
81°F sea temperature in October in Hawaii (Honolulu, Oahu)81
79°F sea temperature in November in Hawaii (Honolulu, Oahu)79
77°F sea temperature in December in Hawaii (Honolulu, Oahu)77

Sunshine & Daylight in Hawaii

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
7 hours of sunshine per day (62% of daylight hours) in January in Hawaii7
7 hours of sunshine per day (65% of daylight hours) in February in Hawaii7
8 hours of sunshine per day (67% of daylight hours) in March in Hawaii8
8 hours of sunshine per day (64% of daylight hours) in April in Hawaii8
9 hours of sunshine per day (67% of daylight hours) in May in Hawaii9
9 hours of sunshine per day (69% of daylight hours) in June in Hawaii9
10 hours of sunshine per day (72% of daylight hours) in July in Hawaii10
9 hours of sunshine per day (73% of daylight hours) in August in Hawaii9
9 hours of sunshine per day (74% of daylight hours) in September in Hawaii9
8 hours of sunshine per day (66% of daylight hours) in October in Hawaii8
7 hours of sunshine per day (58% of daylight hours) in November in Hawaii7
6 hours of sunshine per day (59% of daylight hours) in December in Hawaii6
Daily hours of daylight
11 hours of daylight per day in January in Hawaii (Honolulu, Oahu)11
11 hours of daylight per day in February in Hawaii (Honolulu, Oahu)11
12 hours of daylight per day in March in Hawaii (Honolulu, Oahu)12
13 hours of daylight per day in April in Hawaii (Honolulu, Oahu)13
13 hours of daylight per day in May in Hawaii (Honolulu, Oahu)13
13 hours of daylight per day in June in Hawaii (Honolulu, Oahu)13
13 hours of daylight per day in July in Hawaii (Honolulu, Oahu)13
13 hours of daylight per day in August in Hawaii (Honolulu, Oahu)13
12 hours of daylight per day in September in Hawaii (Honolulu, Oahu)12
12 hours of daylight per day in October in Hawaii (Honolulu, Oahu)12
11 hours of daylight per day in November in Hawaii (Honolulu, Oahu)11
11 hours of daylight per day in December in Hawaii (Honolulu, Oahu)11

Rainfall in Hawaii

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
10 days with some rainfall in January in Hawaii (Honolulu, Oahu)10
9 days with some rainfall in February in Hawaii (Honolulu, Oahu)9
10 days with some rainfall in March in Hawaii (Honolulu, Oahu)10
10 days with some rainfall in April in Hawaii (Honolulu, Oahu)10
8 days with some rainfall in May in Hawaii (Honolulu, Oahu)8
7 days with some rainfall in June in Hawaii (Honolulu, Oahu)7
8 days with some rainfall in July in Hawaii (Honolulu, Oahu)8
7 days with some rainfall in August in Hawaii (Honolulu, Oahu)7
8 days with some rainfall in September in Hawaii (Honolulu, Oahu)8
9 days with some rainfall in October in Hawaii (Honolulu, Oahu)9
11 days with some rainfall in November in Hawaii (Honolulu, Oahu)11
11 days with some rainfall in December in Hawaii (Honolulu, Oahu)11
Average monthly rainfall (inches)
2.3 inches monthly rainfall in January in Hawaii (Honolulu, Oahu)2.3
2.0 inches monthly rainfall in February in Hawaii (Honolulu, Oahu)2.0
2.0 inches monthly rainfall in March in Hawaii (Honolulu, Oahu)2.0
0.6 inches monthly rainfall in April in Hawaii (Honolulu, Oahu)0.6
0.6 inches monthly rainfall in May in Hawaii (Honolulu, Oahu)0.6
0.3 inches monthly rainfall in June in Hawaii (Honolulu, Oahu)0.3
0.5 inches monthly rainfall in July in Hawaii (Honolulu, Oahu)0.5
0.6 inches monthly rainfall in August in Hawaii (Honolulu, Oahu)0.6
0.7 inches monthly rainfall in September in Hawaii (Honolulu, Oahu)0.7
1.9 inches monthly rainfall in October in Hawaii (Honolulu, Oahu)1.9
2.4 inches monthly rainfall in November in Hawaii (Honolulu, Oahu)2.4
3.2 inches monthly rainfall in December in Hawaii (Honolulu, Oahu)3.2

More climate for Hawaii

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 7 (High) in January in Hawaii (Honolulu, Oahu)7
UV (maximum) index 9 (Very High) in February in Hawaii (Honolulu, Oahu)9
UV (maximum) index 11 (Extreme) in March in Hawaii (Honolulu, Oahu)11
UV (maximum) index 11 (Extreme) in April in Hawaii (Honolulu, Oahu)11
UV (maximum) index 11 (Extreme) in May in Hawaii (Honolulu, Oahu)11
UV (maximum) index 11+ (Extreme) in June in Hawaii (Honolulu, Oahu)11
UV (maximum) index 11+ (Extreme) in July in Hawaii (Honolulu, Oahu)11
UV (maximum) index 11+ (Extreme) in August in Hawaii (Honolulu, Oahu)11
UV (maximum) index 11 (Extreme) in September in Hawaii (Honolulu, Oahu)11
UV (maximum) index 9 (Very High) in October in Hawaii (Honolulu, Oahu)9
UV (maximum) index 7 (High) in November in Hawaii (Honolulu, Oahu)7
UV (maximum) index 6 (High) in December in Hawaii (Honolulu, Oahu)6
Heat & Humidity
Low heat & humidity in January in Hawaii (Honolulu, Oahu)L
Low heat & humidity in February in Hawaii (Honolulu, Oahu)L
Low heat & humidity in March in Hawaii (Honolulu, Oahu)L
Low heat & humidity in April in Hawaii (Honolulu, Oahu)L
Moderate heat & humidity in May in Hawaii (Honolulu, Oahu)M
Moderate heat & humidity in June in Hawaii (Honolulu, Oahu)M
High heat & humidity in July in Hawaii (Honolulu, Oahu)H
High heat & humidity in August in Hawaii (Honolulu, Oahu)H
High heat & humidity in September in Hawaii (Honolulu, Oahu)H
High heat & humidity in October in Hawaii (Honolulu, Oahu)H
Moderate heat & humidity in November in Hawaii (Honolulu, Oahu)M
Low heat & humidity in December in Hawaii (Honolulu, Oahu)L

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

Going to Hawaii? Find the best month to visit Hawaii based on the weather.

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Check climate guides for Hawaii showing average temperature, rainfall & sunshine figures for each month of the year. The climate guide shown above is for Honolulu, Oahu.

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More about Hawaii

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

The climate guide for Hawaii, represented by Honolulu, Oahu, 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)  |  Imperial (°F)

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Hawaii climate overview

Hawaii is the only American state that is not part of the North American mainland. Consisting of more than 100 volcanic islands, of which only 7 are inhabited, it lies in the Pacific Ocean about 4,000 kilometres (2,250 miles) south west of San Francisco. The state's population of 1.2 million is the most geographically isolated in the world.

With a tropical climate and Polynesian heritage that was untouched by the west prior to Captain James Cook's landing in Oahu in the 18th century, Hawaii is physically and culturally very different from the rest of the United States.

Mauna Loa on the Big Island is the largest volcano in the world, towering 4,200 metres (13,700) ft out of the sea, while nearby Kilauea is the world's most active, streaming lava continuously into the sea for the past 25 years. Other geological features of Hawaii include beaches of white or sometimes black sand, tall cliffs and waterfalls.

Because Hawaii lies within the tropics, temperatures throughout the islands are fairly constant year-round. However it is slightly cooler in February and March and slightly hotter in August and September.

Rainfall varies enormously depending on which side of the islands you are on and how high above sea level. Generally the prevailing winds are from the north-east. This means that more rain falls on north-east facing shores and slopes than anywhere else. It also tends to rain more at night than during the day.

On the higher slopes on Kauai are some of the wettest places on earth with over 10 metres (400 inches) of rain per year. Paradoxically on the tops of the highest peaks on Maui and the Big Island hardly any rain falls because their summits are almost always above the clouds.

On the leeward side of the islands rainfall is lower with most of it falling during the cooler season that runs from October to April when frontal systems move in from the south. Some of these 'winter' storms can be quite severe.

Generally the climate of Hawaii is very pleasant with mostly warm temperatures, a lot of sunshine and some of the cleanest ocean air to be found anywhere on the planet.

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