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Weather & Climate in Nikhom Nam Un, Thailand
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Nikhom Nam Un has a warm climate with an average annual temperature of 79°F (26°C). Winters average 70°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 319 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 70.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 679 feet.
Temperature
70°F Jan (21°C)
82°F Jul (28°C)
| Annual Average | 78.6°F |
| 46% above US avg | |
| January Average | 70°F (21°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 319 days/yr |
Geography
| Elevation | 679 ft (207 m) |
| Area | 304.1 sq mi (787.5 km²) |
| Population Density | 0/sq mi |
| Coordinates | 17.1831°N, 103.7184°W |
| Timezone | Asia/Bangkok |
Precipitation & Snow
Air Quality
Hurricane History
9 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Kajiki | Category 2 | — | 262 km |
| 2025 | Bualoi | Category 1 | — | 286 km |
| 2017 | Doksuri | Category 1 | 92 mph | 186 km |
| 2013 | Wutip | Category 1 | 69 mph | 149 km |
| 1995 | Lois | Category 1 | 52 mph | 293 km |
| 1991 | Fred | Category 1 | — | 288 km |
| 1989 | Angela | Category 1 | — | 296 km |
| 1985 | Cecil | Category 1 | — | 243 km |
| 1982 | Nancy | Category 1 | 81 mph | 284 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 70°F (21°C) | 0.1 in | Coldest, Driest |
| February | 75°F (24°C) | 0.8 in | |
| March | 81°F (27°C) | 1.7 in | |
| April | 83°F (29°C) | 3.1 in | Warmest |
| May | 83°F (28°C) | 8.0 in | |
| June | 83°F (28°C) | 9.4 in | |
| July | 82°F (28°C) | 9.3 in | |
| August | 81°F (27°C) | 12.6 in | Wettest |
| September | 80°F (27°C) | 8.5 in | |
| October | 79°F (26°C) | 2.8 in | |
| November | 75°F (24°C) | 0.4 in | |
| December | 70°F (21°C) | 0.2 in |
Nikhom Nam Un has a seasonal temperature swing of 13°F / from 70°F in January to 83°F in April. Total annual precipitation is 56.9 inches, with August being the wettest month (12.6") and January the driest (0.1").