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Weather & Climate
Gampaha District, Western, Sri Lanka
Overview
Available climate summaries for Gampaha District. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
26.4°C
Summer Avg
26.3°C
Winter Avg
25.7°C
Record High
35.5°C
Record Low
18.2°C
Annual Precipitation
1998.2 mm
Avg Humidity
83%
Summer Humidity
87%
Winter Humidity
80%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 33.6° | 25.4° | 18.2° | 75.6 | 80% | 150 | 35 |
| Feb | 34.2° | 26.2° | 19° | 70.3 | 77% | 158 | 34.2 |
| Mar | 35.5° | 27.4° | 21.1° | 114.7 | 76% | 191 | 30.2 |
| Apr | 34.1° | 27.6° | 23.6° | 225.6 | 81% | 175 | 32.1 |
| May | 32.1° | 27.3° | 23.8° | 223.5 | 86% | 165 | 40.6 |
| Jun | 30.5° | 26.6° | 23.8° | 143.4 | 87% | 154 | 36.8 |
| Jul | 30.3° | 26.1° | 23.2° | 98.9 | 87% | 157 | 41.1 |
| Aug | 30.2° | 26.1° | 23.3° | 112.8 | 86% | 161 | 35.9 |
| Sep | 30.9° | 26.2° | 23.4° | 162 | 85% | 160 | 38 |
| Oct | 31.9° | 26.2° | 22.1° | 291.7 | 85% | 159 | 41.1 |
| Nov | 31.3° | 26.1° | 20.7° | 304.5 | 85% | 134 | 52.3 |
| Dec | 31.5° | 25.6° | 18.9° | 175.2 | 84% | 130 | 41.1 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.
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