All Countries
Weather & Climate in Horana South, Sri Lanka
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Horana South 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 114 sunny days per year, below the national average of 205. Annual precipitation totals 142.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 75 feet.
Temperature
79°F Jan (26°C)
81°F Jul (27°C)
| Annual Average | 80.6°F |
| 49% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 114 days/yr |
Geography
| Elevation | 75 ft (23 m) |
| Area | 54.8 sq mi (142.0 km²) |
| Population Density | 164/sq mi |
| Coordinates | 6.7159°N, 80.0626°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 | 224 km |
| 1992 | Unnamed | Category 1 | 63 mph | 189 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 4.3 in | Driest |
| February | 80°F (27°C) | 4.8 in | |
| March | 82°F (28°C) | 8.7 in | |
| April | 82°F (28°C) | 14.2 in | Warmest |
| May | 82°F (28°C) | 19.7 in | Wettest |
| June | 81°F (27°C) | 14.5 in | |
| July | 81°F (27°C) | 9.9 in | |
| August | 81°F (27°C) | 9.5 in | |
| September | 80°F (27°C) | 13.4 in | |
| October | 80°F (27°C) | 18.8 in | |
| November | 80°F (27°C) | 15.4 in | |
| December | 79°F (26°C) | 9.0 in | Coldest |
Horana South has a seasonal temperature swing of 3°F / from 79°F in December to 82°F in April. Total annual precipitation is 142.1 inches, with May being the wettest month (19.7") and January the driest (4.3").