Sri Lanka climate guide

Temperature in Sri Lanka (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
31°C maximum daytime temperature in January in Sri Lanka (Colombo)31
31°C maximum daytime temperature in February in Sri Lanka (Colombo)31
32°C maximum daytime temperature in March in Sri Lanka (Colombo)32
32°C maximum daytime temperature in April in Sri Lanka (Colombo)32
31°C maximum daytime temperature in May in Sri Lanka (Colombo)31
30°C maximum daytime temperature in June in Sri Lanka (Colombo)30
30°C maximum daytime temperature in July in Sri Lanka (Colombo)30
30°C maximum daytime temperature in August in Sri Lanka (Colombo)30
30°C maximum daytime temperature in September in Sri Lanka (Colombo)30
30°C maximum daytime temperature in October in Sri Lanka (Colombo)30
30°C maximum daytime temperature in November in Sri Lanka (Colombo)30
30°C maximum daytime temperature in December in Sri Lanka (Colombo)30
Min temperature (night-time)
22°C minimum night-time temperature in January in Sri Lanka (Colombo)22
23°C minimum night-time temperature in February in Sri Lanka (Colombo)23
24°C minimum night-time temperature in March in Sri Lanka (Colombo)24
24°C minimum night-time temperature in April in Sri Lanka (Colombo)24
25°C minimum night-time temperature in May in Sri Lanka (Colombo)25
25°C minimum night-time temperature in June in Sri Lanka (Colombo)25
25°C minimum night-time temperature in July in Sri Lanka (Colombo)25
25°C minimum night-time temperature in August in Sri Lanka (Colombo)25
25°C minimum night-time temperature in September in Sri Lanka (Colombo)25
24°C minimum night-time temperature in October in Sri Lanka (Colombo)24
23°C minimum night-time temperature in November in Sri Lanka (Colombo)23
22°C minimum night-time temperature in December in Sri Lanka (Colombo)22
Sea temperature
28°C sea temperature in January in Sri Lanka (Colombo)28
28°C sea temperature in February in Sri Lanka (Colombo)28
29°C sea temperature in March in Sri Lanka (Colombo)29
30°C sea temperature in April in Sri Lanka (Colombo)30
29°C sea temperature in May in Sri Lanka (Colombo)29
28°C sea temperature in June in Sri Lanka (Colombo)28
27°C sea temperature in July in Sri Lanka (Colombo)27
27°C sea temperature in August in Sri Lanka (Colombo)27
28°C sea temperature in September in Sri Lanka (Colombo)28
28°C sea temperature in October in Sri Lanka (Colombo)28
28°C sea temperature in November in Sri Lanka (Colombo)28
28°C sea temperature in December in Sri Lanka (Colombo)28

Sunshine & Daylight in Sri Lanka

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
8 hours of sunshine per day (67% of daylight hours) in January in Sri Lanka8
9 hours of sunshine per day (71% of daylight hours) in February in Sri Lanka9
9 hours of sunshine per day (72% of daylight hours) in March in Sri Lanka9
8 hours of sunshine per day (63% of daylight hours) in April in Sri Lanka8
6 hours of sunshine per day (51% of daylight hours) in May in Sri Lanka6
6 hours of sunshine per day (50% of daylight hours) in June in Sri Lanka6
6 hours of sunshine per day (50% of daylight hours) in July in Sri Lanka6
6 hours of sunshine per day (52% of daylight hours) in August in Sri Lanka6
6 hours of sunshine per day (50% of daylight hours) in September in Sri Lanka6
6 hours of sunshine per day (53% of daylight hours) in October in Sri Lanka6
7 hours of sunshine per day (58% of daylight hours) in November in Sri Lanka7
7 hours of sunshine per day (59% of daylight hours) in December in Sri Lanka7
Daily hours of daylight
12 hours of daylight per day in January in Sri Lanka (Colombo)12
12 hours of daylight per day in February in Sri Lanka (Colombo)12
12 hours of daylight per day in March in Sri Lanka (Colombo)12
12 hours of daylight per day in April in Sri Lanka (Colombo)12
12 hours of daylight per day in May in Sri Lanka (Colombo)12
13 hours of daylight per day in June in Sri Lanka (Colombo)13
12 hours of daylight per day in July in Sri Lanka (Colombo)12
12 hours of daylight per day in August in Sri Lanka (Colombo)12
12 hours of daylight per day in September in Sri Lanka (Colombo)12
12 hours of daylight per day in October in Sri Lanka (Colombo)12
12 hours of daylight per day in November in Sri Lanka (Colombo)12
12 hours of daylight per day in December in Sri Lanka (Colombo)12

Rainfall in Sri Lanka

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
5 days with some rainfall in January in Sri Lanka (Colombo)5
5 days with some rainfall in February in Sri Lanka (Colombo)5
9 days with some rainfall in March in Sri Lanka (Colombo)9
14 days with some rainfall in April in Sri Lanka (Colombo)14
14 days with some rainfall in May in Sri Lanka (Colombo)14
15 days with some rainfall in June in Sri Lanka (Colombo)15
11 days with some rainfall in July in Sri Lanka (Colombo)11
11 days with some rainfall in August in Sri Lanka (Colombo)11
14 days with some rainfall in September in Sri Lanka (Colombo)14
16 days with some rainfall in October in Sri Lanka (Colombo)16
15 days with some rainfall in November in Sri Lanka (Colombo)15
10 days with some rainfall in December in Sri Lanka (Colombo)10
Average monthly rainfall (mm)
55 mm monthly rainfall in January in Sri Lanka (Colombo)55
74 mm monthly rainfall in February in Sri Lanka (Colombo)74
136 mm monthly rainfall in March in Sri Lanka (Colombo)136
250 mm monthly rainfall in April in Sri Lanka (Colombo)250
382 mm monthly rainfall in May in Sri Lanka (Colombo)382
186 mm monthly rainfall in June in Sri Lanka (Colombo)186
124 mm monthly rainfall in July in Sri Lanka (Colombo)124
116 mm monthly rainfall in August in Sri Lanka (Colombo)116
236 mm monthly rainfall in September in Sri Lanka (Colombo)236
371 mm monthly rainfall in October in Sri Lanka (Colombo)371
306 mm monthly rainfall in November in Sri Lanka (Colombo)306
166 mm monthly rainfall in December in Sri Lanka (Colombo)166

More climate for Sri Lanka

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 11 (Extreme) in January in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in February in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in March in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in April in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in May in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in June in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in July in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in August in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in September in Sri Lanka (Colombo)11
UV (maximum) index 11+ (Extreme) in October in Sri Lanka (Colombo)11
UV (maximum) index 11 (Extreme) in November in Sri Lanka (Colombo)11
UV (maximum) index 11 (Extreme) in December in Sri Lanka (Colombo)11
Heat & Humidity
High heat & humidity in January in Sri Lanka (Colombo)H
High heat & humidity in February in Sri Lanka (Colombo)H
Very high heat & humidity in March in Sri Lanka (Colombo)VH
Very high heat & humidity in April in Sri Lanka (Colombo)VH
Very high heat & humidity in May in Sri Lanka (Colombo)VH
High heat & humidity in June in Sri Lanka (Colombo)H
High heat & humidity in July in Sri Lanka (Colombo)H
High heat & humidity in August in Sri Lanka (Colombo)H
High heat & humidity in September in Sri Lanka (Colombo)H
High heat & humidity in October in Sri Lanka (Colombo)H
High heat & humidity in November in Sri Lanka (Colombo)H
High heat & humidity in December in Sri Lanka (Colombo)H

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

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Check climate guides for Sri Lanka showing average temperature, rainfall & sunshine figures for each month of the year. The climate guide shown above is for Colombo.

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More about Sri Lanka

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

The climate guide for Sri Lanka, represented by Colombo, 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)

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