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Weather & Climate in Chālūs, Iran
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Chālūs enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 42°F in January while summers reach 76°F in July. The area gets 275 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 33.7 inches. The city sits at an elevation of 85 feet.
Temperature
42°F Jan (5°C)
76°F Jul (25°C)
| Annual Average | 58.6°F |
| 9% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 85 ft (26 m) |
| Area | 244.7 sq mi (633.8 km²) |
| Population Density | 285/sq mi |
| Coordinates | 36.6550°N, 51.4204°W |
| Timezone | Asia/Tehran |
Precipitation & Snow
Air Quality
Earthquake History
91 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 | 44 km | 17 km |
| Jun 21, 1990 | 36 km ESE of P?deg?n-e Manj?l, Iran | M5.8 | 145 km | 15 km |
| Jun 21, 1990 | 33 km E of P?deg?n-e Manj?l, Iran | M5.4 | 146 km | 10 km |
| Apr 19, 2002 | 37 km NNW of Qazvin, Iran | M5.2 | 144 km | 33 km |
| Jun 20, 1990 | 38 km ESE of P?deg?n-e Manj?l, Iran | M5.1 | 142 km | 16 km |
| Sep 22, 1992 | 24 km S of B?bol, Iran | M5.1 | 120 km | 36 km |
| Jan 11, 2012 | 26 km SSE of B?bol, Iran | M5.1 | 126 km | 16 km |
| Jan 9, 1998 | 15 km W of ?mol, Iran | M4.8 | 70 km | 33 km |
| Apr 8, 2002 | 29 km W of ?mol, Iran | M4.8 | 60 km | 46 km |
| Sep 25, 1990 | 39 km E of P?deg?n-e Manj?l, Iran | M4.8 | 140 km | 10 km |
| Jul 1, 1990 | 10 km SSW of ?st?neh-ye Ashraf?yeh, Iran | M4.8 | 149 km | 10 km |
| Jul 13, 1990 | 24 km NNE of Qazvin, Iran | M4.7 | 122 km | 33 km |
| Jun 20, 1990 | 16 km S of R?dsar, Iran | M4.7 | 105 km | 10 km |
| Jun 30, 1990 | 12 km S of Langar?d, Iran | M4.7 | 123 km | 10 km |
| May 29, 2004 | 28 km S of Ch?l?s, Iran | M4.7 | 28 km | 10 km |
| Oct 10, 2002 | 24 km WNW of Soleh Bon, Iran | M4.7 | 118 km | 33 km |
| Jun 28, 1990 | 38 km E of P?deg?n-e Manj?l, Iran | M4.7 | 140 km | 10 km |
| Feb 10, 2012 | 23 km SSW of Soleh Bon, Iran | M4.7 | 149 km | 14 km |
| May 7, 2020 | 3 km NNW of Dam?vand, Iran | M4.6 | 116 km | 10 km |
| Aug 13, 1990 | 42 km ESE of P?deg?n-e Manj?l, Iran | M4.6 | 137 km | 35 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 | 87 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Damavand (100 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Damavand | Stratovolcano | 5,670 m (18,602 ft) | -5350 | 100 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 3.0 in | Coldest |
| February | 42°F (6°C) | 2.7 in | |
| March | 46°F (8°C) | 2.7 in | |
| April | 56°F (14°C) | 1.5 in | |
| May | 63°F (17°C) | 1.6 in | |
| June | 72°F (22°C) | 1.2 in | |
| July | 76°F (25°C) | 0.9 in | Driest |
| August | 77°F (25°C) | 1.7 in | Warmest |
| September | 71°F (22°C) | 3.6 in | |
| October | 62°F (16°C) | 6.1 in | Wettest |
| November | 52°F (11°C) | 4.7 in | |
| December | 45°F (7°C) | 4.0 in |
Chālūs has a seasonal temperature swing of 35°F / from 42°F in January to 77°F in August. Total annual precipitation is 33.7 inches, with October being the wettest month (6.1") and July the driest (0.9").