Chālūs, Iran experiences average highs of 19°C (66°F) and lows of 15°C (59°F) throughout the year. Rainfall is frequent, averaging about 13 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have stayed broadly stable across the available records.
Chālūs, Iran Weather & Climate 2026
Monthly climate averages for Chālūs, Iran. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Aug 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.8/10
Best: May, June, September
UV Index
5
Low
Temperature 19°C / 15°C
Feels Like 21°C / 15°C
Rainy Days 13
Rainfall 109 mm
Sunshine 10 h
Humidity 83%
Wind Speed 14 km/h
Dew Point 14°C
Snow Days 1 days
Hottest Month
28°C
August
Avg Low24°C
Rain9days
Coldest Month
7°C
February
Avg High11°C
Rain13days
Driest Month
7days
June
Avg High25°C
Avg Low22°C
Windiest Month
15 km/h
March (Gusts 26)
Worst Time to Visit
Consider avoiding January, February, March due to frequent rain.
Sun Position
Sunrise 04:47
Daylight 14.7h
Sunset 19:26
Live conditions—
Chālūs on the map · live conditions
Chālūs, Iran
- Continent
- Asia
- Country
- Iran
- City
- Chālūs
- Population
- 69.6K
- Coordinates
- 36.66°, 51.42°
Seasonal Breakdown
Spring
Mar–May
Avg High 18°C
Avg Low 13°C
Rain 12 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 27°C
Avg Low 23°C
Rain 9 days/mo
1/3 best months
Autumn
Sep–Nov
Avg High 21°C
Avg Low 17°C
Rain 15 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 12°C
Avg Low 8°C
Rain 14 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 12°C / 8°C . Feb: 11°C / 7°C . Mar: 14°C / 9°C . Apr: 18°C / 12°C . May: 22°C / 17°C . Jun: 25°C / 22°C . Jul: 27°C / 23°C . Aug: 28°C / 24°C . Sep: 24°C / 21°C . Oct: 21°C / 17°C . Nov: 17°C / 13°C . Dec: 14°C / 10°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 144 mm. Feb: 128 mm. Mar: 95 mm. Apr: 69 mm. May: 54 mm. Jun: 31 mm. Jul: 67 mm. Aug: 39 mm. Sep: 137 mm. Oct: 190 mm. Nov: 202 mm. Dec: 147 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 83%. Feb: 82%. Mar: 83%. Apr: 81%. May: 83%. Jun: 81%. Jul: 82%. Aug: 81%. Sep: 84%. Oct: 84%. Nov: 84%. Dec: 85%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 14 km/h . Feb: 15 km/h . Mar: 15 km/h . Apr: 14 km/h . May: 13 km/h . Jun: 13 km/h . Jul: 13 km/h . Aug: 13 km/h . Sep: 14 km/h . Oct: 14 km/h . Nov: 14 km/h . Dec: 14 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 8h. Mar: 9h. Apr: 10h. May: 12h. Jun: 13h. Jul: 12h. Aug: 12h. Sep: 10h. Oct: 9h. Nov: 8h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 3. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 3. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 0 days. Feb: 1 days. Mar: 0 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 0 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 32 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 28°C | Aug · 28°C |
| Coldest month | Feb 2025 · 6°C | Feb · 7°C |
| Wettest month | Dec 2025 · 240 mm | Nov · 202 mm |
| Windiest month | Feb 2025 · 16 km/h | Mar · 15 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair 
March
Fair April
Good May best
Excellent June best
Excellent July
Fair August
Good September best
Excellent October
Good November
Wet December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 12°C / 8°C | 10°C / 5°C | 14days (144 mm) Wet | 7.5h Good | 83% Humid | 2.7 Moderate | Fair | View Details |
| February | 11°C / 7°C | 9°C / 4°C | 13days (128 mm) Wet | 8.1h Good | 82% Humid | 3.3 Moderate | Fair | View Details |
| March | 14°C / 9°C | 13°C / 7°C | 15days (95 mm) Wet | 9h Good | 83% Humid | 4.7 Moderate | Fair | View Details |
| April | 18°C / 12°C | 18°C / 11°C | 11days (69 mm) Wet | 10.4h Excellent | 81% Humid | 6.1 High | Good | View Details |
| May best | 22°C / 17°C | 24°C / 18°C | 9days (54 mm) Wet | 11.7h Excellent | 83% Humid | 6.5 High | Excellent | View Details |
| June best | 25°C / 22°C | 29°C / 24°C | 7days (31 mm) Good | 12.7h Excellent | 81% Humid | 7.3 Very High | Excellent | View Details |
| July | 27°C / 23°C | 32°C / 27°C | 12days (67 mm) Wet | 12.3h Excellent | 82% Humid | 6.9 High | Fair | View Details |
| August | 28°C / 24°C | 32°C / 28°C | 9days (39 mm) Wet | 12.1h Excellent | 81% Humid | 6.7 High | Good | View Details |
| September best | 24°C / 21°C | 28°C / 23°C | 14days (137 mm) Wet | 10.3h Excellent | 84% Humid | 4.9 Moderate | Excellent | View Details |
| October | 21°C / 17°C | 22°C / 18°C | 16days (190 mm) Wet | 8.9h Good | 84% Humid | 4.1 Moderate | Good | View Details |
| November | 17°C / 13°C | 16°C / 12°C | 15days (202 mm) Wet | 7.5h Good | 84% Humid | 3.3 Moderate | Wet | View Details |
| December | 14°C / 10°C | 12°C / 8°C | 15days (147 mm) Wet | 7.2h Good | 85% Humid | 2.5 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Chālūs are May, June, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Chālūs, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Chālūs is August, with average daytime highs of 28°C (82°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Chālūs is February, with average overnight lows of 7°C (45°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Chālūs is November, averaging 202mm of precipitation across 15 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Chālūs runs through October, March, November, December, with the heaviest rainfall in October. Based on 10-year averages for Chālūs.
Chālūs receives approximately 118 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Chālūs.
The least favorable months to visit Chālūs are January, February, March, primarily due to frequent rain. For the best conditions, consider May, June, September instead.
The annual average UV index in Chālūs is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Chālūs is 83%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes, Chālūs receives snow. Months with snowfall average 1 snow days and 3 cm (1 in) of accumulation, with about 0 frost days during winter.
Average wind speeds in Chālūs are 14 km/h (9 mph). The windiest month is March with peak winds reaching 15 km/h (9 mph) (gusts up to 26 km/h / 16 mph).
Chālūs averages 6 clear-sky days per month with overall cloud cover around 51%. The clearest skies occur in June.
The annual average dew point in Chālūs is 14°C (57°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Chālūs has a Hot-Summer Mediterranean climate, classified as Csa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Chālūs ranges from 15°C (59°F) to 21°C (70°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Chālūs. It earns a climate score of 8.6/10 with Excellent.
For June in Chālūs, pack Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 25°C (77°F) and 7 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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