Climate Insights for Chālūs

, Mazandaran Province, Iran

Hottest
July
25°C peak
Coldest
January
2°C low
Wettest
October
197mm rain
Best to Visit
May, June, August
Mild temps & low rain

Climate Overview

The climate in Chālūs is temperate. The average annual temperature is 14°C and approximately 1538mm of precipitation falls per year. Chālūs receives a notable amount of rainfall throughout the year, including during its driest month. Chālūs is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to 2°C. Snowfall occurs from January to December, with around 114cm accumulating over the season.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 8° Average: 5° Min: 2° Feb Max: 8° Average: 5° Min: 2° Mar Max: 11° Average: 9° Min: 6° Apr Max: 14° Average: 11° Min: 8° May Max: 20° Average: 18° Min: 15° Jun Max: 23° Average: 21° Min: 19° Jul Max: 25° Average: 23° Min: 21° Aug Max: 25° Average: 23° Min: 20° Sep Max: 23° Average: 20° Min: 18° Oct Max: 19° Average: 16° Min: 13° Nov Max: 13° Average: 10° Min: 7° Dec Max: 10° Average: 7° Min: 4°
Max
Average
Min

Temperatures in Chālūs vary considerably across the year, with a 23°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 25°C and the mean temperature sits around 23°C. January is the coolest month, with minimum temperatures around 2°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between April and May, with a 6°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 125mm Snow: 21mm Feb Precipitation: 118mm Snow: 31mm Mar Precipitation: 103mm Snow: 19mm Apr Precipitation: 114mm Snow: 9mm May Precipitation: 80mm Snow: 0mm Jun Precipitation: 85mm Snow: 0mm Jul Precipitation: 132mm Snow: 0mm Aug Precipitation: 89mm Snow: 0mm Sep Precipitation: 185mm Snow: 0mm Oct Precipitation: 197mm Snow: 0mm Nov Precipitation: 189mm Snow: 17mm Dec Precipitation: 122mm Snow: 16mm
Precipitation
Snow

Chālūs is a fairly wet location, receiving approximately 1538mm of precipitation annually, which averages out to around 128mm per month. The wettest month is October, averaging 197mm of rainfall. November and September also tend to see above-average precipitation. The driest month is May, with just 80mm. That's 117mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 114cm accumulating over the season. February typically sees the most snow at around 31cm.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 2km/h Feb Wind Speed: 2km/h Mar Wind Speed: 2km/h Apr Wind Speed: 2km/h May Wind Speed: 2km/h Jun Wind Speed: 2km/h Jul Wind Speed: 2km/h Aug Wind Speed: 2km/h Sep Wind Speed: 2km/h Oct Wind Speed: 2km/h Nov Wind Speed: 2km/h Dec Wind Speed: 2km/h
Wind Speed

Chālūs is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

93 days until Autumn

It is currently summer in Chālūs, which began on June 21, 2026. Chālūs is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 25°C, while the coldest stretch bottoms out in January near 2°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

Spring

Temperatures range from 6 to 20°C. Precipitation is moderate at around 297mm for the season, averaging 99mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 19 to 25°C. Rainfall is heavy, totalling around 306mm across the season with a monthly average of 102mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 7 to 23°C. Rainfall is heavy, totalling around 570mm across the season with a monthly average of 190mm. Expect around 17cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 2 to 10°C. Rainfall is heavy, totalling around 365mm across the season with a monthly average of 122mm. Expect around 68cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan
Feb
Mar
Apr 11°
May 18°
Jun 21°
Jul 23°
Aug 23°
Sep 20°
Oct 16°
Nov 10°
Dec

The best time to visit Chālūs is during May, June and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 85mm per month. By contrast, July can be uncomfortably hot with highs reaching 25°C, while January is the coldest period with lows dropping to 2°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Chālūs based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
2 °C
8 °C
2 km/h
125 mm
21 cm
Feb
2 °C
8 °C
2 km/h
118 mm
31 cm
Mar
6 °C
11 °C
2 km/h
103 mm
19 cm
Apr
8 °C
14 °C
2 km/h
114 mm
9 cm
May
15 °C
20 °C
2 km/h
80 mm
0 cm
Jun Current
19 °C
23 °C
2 km/h
85 mm
0 cm
Jul
21 °C
25 °C
2 km/h
132 mm
0 cm
Aug
20 °C
25 °C
2 km/h
89 mm
0 cm
Sep
18 °C
23 °C
2 km/h
185 mm
0 cm
Oct
13 °C
19 °C
2 km/h
197 mm
0 cm
Nov
7 °C
13 °C
2 km/h
189 mm
17 cm
Dec
4 °C
10 °C
2 km/h
122 mm
16 cm
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