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Weather & Climate in Ratnapura, Sri Lanka
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ratnapura has a warm climate with an average annual temperature of 78°F (25°C). Winters average 76°F in January while summers reach 77°F in July / relatively mild seasonal variation. The area gets 99 sunny days per year, below the national average of 205. Annual precipitation totals 164.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 240 feet.
Temperature
76°F Jan (24°C)
77°F Jul (25°C)
| Annual Average | 77.5°F |
| 44% above US avg | |
| January Average | 76°F (24°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 99 days/yr |
Geography
| Elevation | 240 ft (73 m) |
| Area | 7.7 sq mi (20.0 km²) |
| Population Density | 6,196/sq mi |
| Coordinates | 6.6858°N, 80.4036°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 | 212 km |
| 1992 | Unnamed | Category 1 | 63 mph | 224 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 76°F (24°C) | 4.8 in | Coldest, Driest |
| February | 77°F (25°C) | 5.3 in | |
| March | 79°F (26°C) | 9.7 in | |
| April | 79°F (26°C) | 14.5 in | Warmest |
| May | 79°F (26°C) | 21.1 in | Wettest |
| June | 78°F (26°C) | 19.5 in | |
| July | 77°F (25°C) | 14.8 in | |
| August | 77°F (25°C) | 14.3 in | |
| September | 77°F (25°C) | 16.1 in | |
| October | 77°F (25°C) | 18.8 in | |
| November | 77°F (25°C) | 15.8 in | |
| December | 76°F (25°C) | 9.4 in |
Ratnapura has a seasonal temperature swing of 3°F / from 76°F in January to 79°F in April. Total annual precipitation is 164.0 inches, with May being the wettest month (21.1") and January the driest (4.8").