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Weather & Climate in Khian Sa, Thailand
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Khian Sa has a warm climate with an average annual temperature of 80°F (27°C). Winters average 77°F in January while summers reach 81°F in July / relatively mild seasonal variation. The area gets 330 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 62.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 62 feet.
Temperature
77°F Jan (25°C)
81°F Jul (27°C)
| Annual Average | 80.2°F |
| 49% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 62 ft (19 m) |
| Area | 314.8 sq mi (815.3 km²) |
| Population Density | 0/sq mi |
| Coordinates | 8.8430°N, 99.1986°W |
| Timezone | Asia/Bangkok |
Precipitation & Snow
Air Quality
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| May 5, 2015 | 19 km SE of Ban Phru Nai, Thailand | M4.2 | 122 km | 10 km |
| Apr 16, 2012 | 19 km E of Ban Mai Khao, Thailand | M3.9 | 115 km | 10 km |
| May 6, 2015 | 1 km S of Ban Phru Nai, Thailand | M3.8 | 121 km | 15 km |
| Mar 24, 2015 | 28 km SE of Ban Phru Nai, Thailand | M3.4 | 132 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 1989 | Gay | Category 3 | 132 mph | 206 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 1.2 in | Coldest |
| February | 80°F (27°C) | 0.9 in | Driest |
| March | 81°F (27°C) | 2.2 in | |
| April | 83°F (28°C) | 4.2 in | Warmest |
| May | 82°F (28°C) | 7.4 in | |
| June | 81°F (27°C) | 6.2 in | |
| July | 81°F (27°C) | 7.4 in | |
| August | 80°F (27°C) | 8.6 in | |
| September | 80°F (27°C) | 9.7 in | |
| October | 79°F (26°C) | 10.7 in | Wettest |
| November | 79°F (26°C) | 10.0 in | |
| December | 78°F (26°C) | 4.4 in |
Khian Sa has a seasonal temperature swing of 5°F / from 77°F in January to 83°F in April. Total annual precipitation is 72.9 inches, with October being the wettest month (10.7") and February the driest (0.9").