All Countries
Weather & Climate in Chilaw, Sri Lanka
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Chilaw has a warm climate with an average annual temperature of 82°F (28°C). Winters average 79°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 229 sunny days per year, above the national average. Annual precipitation totals 59.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 26 feet.
Temperature
79°F Jan (26°C)
82°F Jul (28°C)
| Annual Average | 81.6°F |
| 51% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 229 days/yr |
Geography
| Elevation | 26 ft (8 m) |
| Area | 2,904.5 sq mi (7,522.6 km²) |
| Population Density | 9/sq mi |
| Coordinates | 7.5758°N, 79.7953°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 | 168 km |
| 1992 | Unnamed | Category 1 | 63 mph | 132 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 1.7 in | Driest |
| February | 81°F (27°C) | 1.9 in | |
| March | 83°F (28°C) | 3.7 in | |
| April | 84°F (29°C) | 7.8 in | |
| May | 84°F (29°C) | 7.4 in | Warmest |
| June | 83°F (28°C) | 3.4 in | |
| July | 82°F (28°C) | 2.3 in | |
| August | 82°F (28°C) | 1.8 in | |
| September | 82°F (28°C) | 3.5 in | |
| October | 81°F (27°C) | 10.8 in | Wettest |
| November | 80°F (27°C) | 10.4 in | |
| December | 79°F (26°C) | 4.4 in | Coldest |
Chilaw has a seasonal temperature swing of 5°F / from 79°F in December to 84°F in May. Total annual precipitation is 59.0 inches, with October being the wettest month (10.8") and January the driest (1.7").