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Weather & Climate
Chilaw, North Western, Sri Lanka
Overview
Climate data and monthly weather averages for Chilaw.
Key Metrics
Annual Avg
26.8°C
Summer Avg
26.9°C
Winter Avg
25.8°C
Record High
37.3°C
Record Low
17.7°C
Annual Precipitation
1598 mm
Avg Humidity
81%
Summer Humidity
84%
Winter Humidity
81%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 33.9° | 25.3° | 18° | 60.8 | 81% | 170 | 37.3 |
| Feb | 35.5° | 26.4° | 17.7° | 54.6 | 76% | 172 | 35.4 |
| Mar | 36.8° | 28.1° | 19° | 94.2 | 72% | 203 | 31.9 |
| Apr | 37.3° | 28.3° | 23.6° | 181.8 | 78% | 187 | 35.9 |
| May | 33.3° | 27.9° | 24.2° | 162.4 | 84% | 173 | 44.5 |
| Jun | 32.4° | 27.2° | 24.2° | 93.3 | 84% | 170 | 39.9 |
| Jul | 32.1° | 26.8° | 23.5° | 65.1 | 84% | 178 | 43.2 |
| Aug | 31.3° | 26.8° | 23.8° | 76.3 | 83% | 184 | 44.2 |
| Sep | 32.2° | 26.9° | 23.7° | 117.6 | 82% | 179 | 40 |
| Oct | 33° | 26.7° | 21.6° | 257.6 | 83% | 174 | 44.4 |
| Nov | 31.9° | 26.2° | 20.2° | 269.7 | 85% | 147 | 53.2 |
| Dec | 32° | 25.6° | 18.8° | 164.6 | 85% | 149 | 48.5 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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