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Weather & Climate in Chamestān, Iran
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Chamestān enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 41°F in January while summers reach 78°F in July. The area gets 287 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 27.3 inches (drier than the 38-inch national average). The city sits at an elevation of 456 feet.
Temperature
41°F Jan (5°C)
78°F Jul (25°C)
| Annual Average | 59.2°F |
| 10% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 287 days/yr |
Geography
| Elevation | 456 ft (139 m) |
| Area | 156.2 sq mi (404.6 km²) |
| Population Density | 72/sq mi |
| Coordinates | 36.4782°N, 52.1184°W |
| Timezone | Asia/Tehran |
Precipitation & Snow
Air Quality
Earthquake History
90 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| May 28, 2004 | 41 km SSE of Nowshahr, Iran | M6.3 | 50 km | 17 km |
| Jan 20, 1990 | 36 km E of Soleh Bon, Iran | M6.0 | 104 km | 25 km |
| Jan 11, 2012 | 26 km SSE of B?bol, Iran | M5.1 | 61 km | 16 km |
| Sep 22, 1992 | 24 km S of B?bol, Iran | M5.1 | 55 km | 36 km |
| Jun 20, 2025 | 38 km WSW of Semnan, Iran | M4.9 | 145 km | 10 km |
| Apr 8, 2002 | 29 km W of ?mol, Iran | M4.8 | 10 km | 46 km |
| Dec 9, 1999 | 19 km S of Behshahr, Iran | M4.8 | 127 km | 10 km |
| Mar 21, 2013 | 56 km NE of Mahdishahr, Iran | M4.8 | 148 km | 10 km |
| Jan 9, 1998 | 15 km W of ?mol, Iran | M4.8 | 5 km | 33 km |
| Feb 10, 2012 | 23 km SSW of Soleh Bon, Iran | M4.7 | 102 km | 14 km |
| May 29, 2004 | 28 km S of Ch?l?s, Iran | M4.7 | 68 km | 10 km |
| Aug 23, 1991 | 23 km NNW of Mahdishahr, Iran | M4.7 | 120 km | 33 km |
| Jan 20, 2010 | 28 km ENE of Soleh Bon, Iran | M4.7 | 99 km | 5 km |
| Oct 10, 2002 | 24 km WNW of Soleh Bon, Iran | M4.7 | 68 km | 33 km |
| Aug 25, 2015 | 19 km S of Soleh Bon, Iran | M4.6 | 107 km | 7 km |
| May 7, 2020 | 3 km NNW of Dam?vand, Iran | M4.6 | 82 km | 10 km |
| Feb 20, 2005 | 7 km SSW of J?yb?r, Iran | M4.6 | 70 km | 30 km |
| Jan 22, 1991 | 25 km SSW of Soleh Bon, Iran | M4.6 | 104 km | 13 km |
| Jun 21, 2003 | 35 km ESE of Soleh Bon, Iran | M4.5 | 119 km | 33 km |
| Jan 17, 2023 | 20 km SW of Sari, Iran | M4.5 | 72 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1608 | CASPIAN SEA | Earthquake | - | 3,000 | 145 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Damavand (59 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Damavand | Stratovolcano | 5,670 m (18,602 ft) | -5350 | 59 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 2.8 in | Coldest |
| February | 42°F (6°C) | 2.3 in | |
| March | 47°F (8°C) | 2.3 in | |
| April | 58°F (14°C) | 1.3 in | |
| May | 65°F (18°C) | 1.3 in | |
| June | 73°F (23°C) | 0.9 in | |
| July | 78°F (25°C) | 0.7 in | Driest |
| August | 78°F (25°C) | 1.3 in | Warmest |
| September | 72°F (22°C) | 2.7 in | |
| October | 62°F (17°C) | 4.6 in | Wettest |
| November | 52°F (11°C) | 3.7 in | |
| December | 44°F (7°C) | 3.3 in |
Chamestān has a seasonal temperature swing of 37°F / from 41°F in January to 78°F in August. Total annual precipitation is 27.3 inches, with October being the wettest month (4.6") and July the driest (0.7").