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Weather & Climate in Kalmunai, Sri Lanka
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kalmunai has a warm climate with an average annual temperature of 82°F (28°C). Winters average 79°F in January while summers reach 84°F in July / relatively mild seasonal variation. The area gets 221 sunny days per year, above the national average. Annual precipitation totals 65.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 33 feet.
Temperature
79°F Jan (26°C)
84°F Jul (29°C)
| Annual Average | 82.1°F |
| 52% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 221 days/yr |
Geography
| Elevation | 33 ft (10 m) |
| Area | 4,532.3 sq mi (11,738.6 km²) |
| Population Density | 22/sq mi |
| Coordinates | 7.4090°N, 81.8347°W |
| Timezone | Asia/Colombo |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Apr 15, 2009 | 109 km SE of Kalmunai, Sri Lanka | M4.5 | 110 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
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 | 152 km |
| 1993 | Unnamed | Category 1 | 75 mph | 266 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1882 | SRI LANKA | Earthquake | — | — | 145 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 12.6 in | Coldest |
| February | 80°F (27°C) | 8.0 in | |
| March | 82°F (28°C) | 3.2 in | |
| April | 84°F (29°C) | 2.7 in | |
| May | 85°F (29°C) | 1.4 in | Warmest |
| June | 84°F (29°C) | 0.9 in | Driest |
| July | 84°F (29°C) | 1.3 in | |
| August | 84°F (29°C) | 1.5 in | |
| September | 84°F (29°C) | 1.6 in | |
| October | 82°F (28°C) | 5.9 in | |
| November | 80°F (27°C) | 11.3 in | |
| December | 79°F (26°C) | 15.4 in | Wettest |
Kalmunai has a seasonal temperature swing of 6°F / from 79°F in January to 85°F in May. Total annual precipitation is 66.0 inches, with December being the wettest month (15.4") and June the driest (0.9").