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Weather & Climate in Ban Na San, Thailand
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ban Na San has a warm climate with an average annual temperature of 79°F (26°C). Winters average 77°F in January while summers reach 80°F in July / relatively mild seasonal variation. The area gets 202 sunny days per year. Annual precipitation totals 73.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 131 feet.
Temperature
77°F Jan (25°C)
80°F Jul (26°C)
| Annual Average | 79.0°F |
| 46% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 80°F (26°C) |
| Sunny Days | 202 days/yr |
Geography
| Elevation | 131 ft (40 m) |
| Area | 314.8 sq mi (815.3 km²) |
| Population Density | 70/sq mi |
| Coordinates | 8.8004°N, 99.3637°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 | 127 km | 10 km |
| Apr 16, 2012 | 19 km E of Ban Mai Khao, Thailand | M3.9 | 125 km | 10 km |
| May 6, 2015 | 1 km S of Ban Phru Nai, Thailand | M3.8 | 128 km | 15 km |
| Mar 24, 2015 | 28 km SE of Ban Phru Nai, Thailand | M3.4 | 136 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 3.
| Year | Name | Category | Max Wind | Closest |
| 1997 | Linda | Category 1 | 52 mph | 300 km |
| 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) | 1.3 in | |
| February | 79°F (26°C) | 1.1 in | Driest |
| March | 80°F (27°C) | 2.6 in | |
| April | 81°F (27°C) | 4.5 in | Warmest |
| May | 81°F (27°C) | 7.4 in | |
| June | 80°F (27°C) | 6.0 in | |
| July | 80°F (26°C) | 7.5 in | |
| August | 79°F (26°C) | 8.9 in | |
| September | 79°F (26°C) | 9.5 in | |
| October | 78°F (26°C) | 10.7 in | Wettest |
| November | 77°F (25°C) | 9.9 in | |
| December | 77°F (25°C) | 4.5 in | Coldest |
Ban Na San has a seasonal temperature swing of 5°F / from 77°F in December to 81°F in April. Total annual precipitation is 73.9 inches, with October being the wettest month (10.7") and February the driest (1.1").