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Weather & Climate in Kalutara, Sri Lanka
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kalutara has a warm climate with an average annual temperature of 81°F (27°C). Winters average 79°F in January while summers reach 81°F in July / relatively mild seasonal variation. The area gets 138 sunny days per year, below the national average of 205. Annual precipitation totals 119.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 23 feet.
Temperature
79°F Jan (26°C)
81°F Jul (27°C)
| Annual Average | 80.7°F |
| 49% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 138 days/yr |
Geography
| Elevation | 23 ft (7 m) |
| Area | 316.4 sq mi (819.4 km²) |
| Population Density | 117/sq mi |
| Coordinates | 6.5831°N, 79.9593°W |
| Timezone | Asia/Colombo |
Precipitation & Snow
Air Quality
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2000 | Unnamed | Category 1 | 104 mph | 242 km |
| 1992 | Unnamed | Category 1 | 63 mph | 188 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 4.1 in | Coldest |
| February | 80°F (27°C) | 4.1 in | Driest |
| March | 82°F (28°C) | 6.5 in | |
| April | 82°F (28°C) | 12.2 in | Warmest |
| May | 82°F (28°C) | 17.0 in | Wettest |
| June | 81°F (27°C) | 10.8 in | |
| July | 81°F (27°C) | 7.7 in | |
| August | 81°F (27°C) | 7.0 in | |
| September | 81°F (27°C) | 10.2 in | |
| October | 80°F (27°C) | 17.0 in | |
| November | 80°F (27°C) | 14.4 in | |
| December | 79°F (26°C) | 8.4 in |
Kalutara has a seasonal temperature swing of 3°F / from 79°F in January to 82°F in April. Total annual precipitation is 119.3 inches, with May being the wettest month (17.0") and February the driest (4.1").