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Colombo Climate Guide
Sri Lanka
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Maximum Daytime Temperature (°C)
Minimum Night-time Temperature (°C)
31
31 °C (88°F) Maximum Daytime Temperature in January
31
31 °C (88°F) Maximum Daytime Temperature in February
32
32 °C (90°F) Maximum Daytime Temperature in March
32
32 °C (90°F) Maximum Daytime Temperature in April
31
31 °C (88°F) Maximum Daytime Temperature in May
30
30 °C (86°F) Maximum Daytime Temperature in June
30
30 °C (86°F) Maximum Daytime Temperature in July
30
30 °C (86°F) Maximum Daytime Temperature in August
30
30 °C (86°F) Maximum Daytime Temperature in September
30
30 °C (86°F) Maximum Daytime Temperature in October
30
30 °C (86°F) Maximum Daytime Temperature in November
30
30 °C (86°F) Maximum Daytime Temperature in December
J F M A M J J A S O N D
22
22 °C (72°F) Minimum Night-time Temperature in January
23
23 °C (73°F) Minimum Night-time Temperature in February
24
24 °C (75°F) Minimum Night-time Temperature in March
24
24 °C (75°F) Minimum Night-time Temperature in April
25
25 °C (77°F) Minimum Night-time Temperature in May
25
25 °C (77°F) Minimum Night-time Temperature in June
25
25 °C (77°F) Minimum Night-time Temperature in July
25
25 °C (77°F) Minimum Night-time Temperature in August
25
25 °C (77°F) Minimum Night-time Temperature in September
24
24 °C (75°F) Minimum Night-time Temperature in October
23
23 °C (73°F) Minimum Night-time Temperature in November
23
23 °C (73°F) Minimum Night-time Temperature in December
J F M A M J J A S O N D
Hours of Sunshine
Hours of Daylight
8
8 Hours of Sunshine (67% of Daylight Hours) in January
9
9 Hours of Sunshine (71% of Daylight Hours) in February
9
9 Hours of Sunshine (72% of Daylight Hours) in March
8
8 Hours of Sunshine (63% of Daylight Hours) in April
6
6 Hours of Sunshine (52% of Daylight Hours) in May
6
6 Hours of Sunshine (50% of Daylight Hours) in June
6
6 Hours of Sunshine (50% of Daylight Hours) in July
6
6 Hours of Sunshine (52% of Daylight Hours) in August
6
6 Hours of Sunshine (50% of Daylight Hours) in September
6
6 Hours of Sunshine (53% of Daylight Hours) in October
7
7 Hours of Sunshine (58% of Daylight Hours) in November
7
7 Hours of Sunshine (59% of Daylight Hours) in December
J F M A M J J A S O N D
12
12 Hours of Daylight in January
12
12 Hours of Daylight in February
12
12 Hours of Daylight in March
12
12 Hours of Daylight in April
12
12 Hours of Daylight in May
13
13 Hours of Daylight in June
13
13 Hours of Daylight in July
12
12 Hours of Daylight in August
12
12 Hours of Daylight in September
12
12 Hours of Daylight in October
12
12 Hours of Daylight in November
12
12 Hours of Daylight in December
J F M A M J J A S O N D
Days with some Rain
Monthly Rainfall (mm)
5
5 Days with some Rain in January
4
4 Days with some Rain in February
7
7 Days with some Rain in March
11
11 Days with some Rain in April
10
10 Days with some Rain in May
10
10 Days with some Rain in June
8
8 Days with some Rain in July
8
8 Days with some Rain in August
10
10 Days with some Rain in September
14
14 Days with some Rain in October
14
14 Days with some Rain in November
11
11 Days with some Rain in December
J F M A M J J A S O N D
55
55 mm (2.2 inches) Monthly Rainfall in January
74
74 mm (2.9 inches) Monthly Rainfall in February
136
136 mm (5.4 inches) Monthly Rainfall in March
250
250 mm (9.8 inches) Monthly Rainfall in April
382
382 mm (15.0 inches) Monthly Rainfall in May
186
186 mm (7.3 inches) Monthly Rainfall in June
124
124 mm (4.9 inches) Monthly Rainfall in July
116
116 mm (4.6 inches) Monthly Rainfall in August
236
236 mm (9.3 inches) Monthly Rainfall in September
371
371 mm (14.6 inches) Monthly Rainfall in October
306
306 mm (12.0 inches) Monthly Rainfall in November
166
166 mm (6.5 inches) Monthly Rainfall in December
J F M A M J J A S O N D
Heat & Humidity / Chance of Frost
UV Index (Maximum)
H
High Heat & Humidity in January
H
High Heat & Humidity in February
VH
Very High Heat & Humidity in March
VH
Very High Heat & Humidity in April
VH
Very High Heat & Humidity in May
H
High Heat & Humidity in June
H
High Heat & Humidity in July
H
High Heat & Humidity in August
H
High Heat & Humidity in September
H
High Heat & Humidity in October
H
High Heat & Humidity in November
H
High Heat & Humidity in December
J F M A M J J A S O N D
11
UV 11 (Extreme) in January
11
UV 11+ (Extreme) in February
11
UV 11+ (Extreme) in March
11
UV 11+ (Extreme) in April
11
UV 11+ (Extreme) in May
11
UV 11+ (Extreme) in June
11
UV 11+ (Extreme) in July
11
UV 11+ (Extreme) in August
11
UV 11+ (Extreme) in September
11
UV 11+ (Extreme) in October
11
UV 11 (Extreme) in November
11
UV 11 (Extreme) in December
J F M A M J J A S O N D
Sea Temperature (°C)
28
28 °C (82°F) Sea Temperature in January
28
28 °C (82°F) Sea Temperature in February
29
29 °C (84°F) Sea Temperature in March
30
30 °C (86°F) Sea Temperature in April
29
29 °C (84°F) Sea Temperature in May
28
28 °C (82°F) Sea Temperature in June
27
27 °C (81°F) Sea Temperature in July
27
27 °C (81°F) Sea Temperature in August
27
27 °C (81°F) Sea Temperature in September
28
28 °C (82°F) Sea Temperature in October
28
28 °C (82°F) Sea Temperature in November
28
28 °C (82°F) Sea Temperature in December
J F M A M J J A S O N D
Colombo Climate Guide (Historical Weather Averages), Sri Lanka
Elev: 0 m   Long: 079°50'E   Lat: 06°55'N
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