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Weather & Climate in Om Koi, Thailand
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Om Koi has a warm climate with an average annual temperature of 73°F (23°C). Winters average 66°F in January while summers reach 74°F in July / relatively mild seasonal variation. The area gets 264 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 39.7 inches. The city sits at an elevation of 2,707 feet.
Temperature
66°F Jan (19°C)
74°F Jul (24°C)
| Annual Average | 72.9°F |
| 35% above US avg | |
| January Average | 66°F (19°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 264 days/yr |
Geography
| Elevation | 2,707 ft (825 m) |
| Area | 302.2 sq mi (782.6 km²) |
| Population Density | 6/sq mi |
| Coordinates | 17.8012°N, 98.3593°W |
| Timezone | Asia/Bangkok |
Precipitation & Snow
Air Quality
Earthquake History
5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Apr 10, 2013 | Myanmar-Thailand border region | M4.6 | 144 km | 10 km |
| Aug 18, 2002 | 68 km ENE of Kyaikto, Myanmar | M4.4 | 86 km | 33 km |
| May 29, 1995 | 47 km SSW of Mae Hong Son, Thailand | M4.0 | 135 km | 33 km |
| Nov 5, 1991 | 29 km S of Mae Hong Son, Thailand | M3.9 | 144 km | 10 km |
| May 7, 1994 | 13 km SSE of Mae Tha, Thailand | M3.6 | 105 km | 33 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 2.
| Year | Name | Category | Max Wind | Closest |
| 2008 | Nargis | Category 2 | 92 mph | 279 km |
| 1982 | Unnamed | Category 1 | - | 252 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 66°F (19°C) | 0.1 in | Coldest, Driest |
| February | 70°F (21°C) | 0.5 in | |
| March | 76°F (24°C) | 0.6 in | |
| April | 79°F (26°C) | 2.3 in | Warmest |
| May | 78°F (25°C) | 6.6 in | |
| June | 75°F (24°C) | 4.5 in | |
| July | 74°F (24°C) | 4.2 in | |
| August | 74°F (23°C) | 5.9 in | |
| September | 74°F (23°C) | 7.6 in | Wettest |
| October | 73°F (23°C) | 5.7 in | |
| November | 70°F (21°C) | 1.7 in | |
| December | 66°F (19°C) | 0.3 in |
Om Koi has a seasonal temperature swing of 13°F / from 66°F in January to 79°F in April. Total annual precipitation is 39.6 inches, with September being the wettest month (7.6") and January the driest (0.1").