Jam, Iran experiences average highs of 29°C (84°F) and lows of 20°C (68°F) throughout the year. The climate is relatively dry, with only 2 rainy days per month on average. Sunshine is abundant, averaging about 11 hours per day. Average highs have stayed broadly stable across the available records.
Jam, Iran Weather & Climate 2026
Monthly climate averages for Jam, Iran. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.4/10
Best: March, April, October, November, December
UV Index
6
High
Temperature 29°C / 20°C
Feels Like 30°C / 21°C
Rainy Days 2
Rainfall 22 mm
Sunshine 11 h
Humidity 53%
Wind Speed 13 km/h
Dew Point 14°C
Hottest Month
37°C
August
Avg Low29°C
Rain1days
Coldest Month
11°C
January
Avg High19°C
Rain4days
Driest Month
0days
June
Avg High37°C
Avg Low27°C
Windiest Month
16 km/h
May (Gusts 45)
Sea Temperature
22°C – 35°C
Warmest water: August (
35.1°C
)
Worst Time to Visit
Consider avoiding July, August, September due to extreme heat, oppressive humidity.
Sun Position
Sunrise 05:06
Daylight 13.9h
Sunset 18:59
Live conditions—
Jam on the map · live conditions
Jam, Iran
- Continent
- Asia
- Country
- Iran
- City
- Jam
- Population
- 31.4K
- Coordinates
- 27.83°, 52.33°
Seasonal Breakdown
Spring
Mar–May
Avg High 28°C
Avg Low 19°C
Rain 2 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 37°C
Avg Low 28°C
Rain 0 days/mo
Autumn
Sep–Nov
Avg High 31°C
Avg Low 22°C
Rain 1 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 20°C
Avg Low 12°C
Rain 4 days/mo
1/3 best months
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: 19°C / 11°C . Feb: 20°C / 12°C . Mar: 24°C / 15°C . Apr: 28°C / 19°C . May: 33°C / 24°C . Jun: 37°C / 27°C . Jul: 37°C / 29°C . Aug: 37°C / 29°C . Sep: 35°C / 27°C . Oct: 31°C / 23°C . Nov: 26°C / 17°C . Dec: 21°C / 13°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 55 mm. Feb: 59 mm. Mar: 35 mm. Apr: 10 mm. May: 8 mm. Jun: 0 mm. Jul: 2 mm. Aug: 2 mm. Sep: 1 mm. Oct: 3 mm. Nov: 34 mm. Dec: 50 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 64%. Feb: 62%. Mar: 55%. Apr: 44%. May: 35%. Jun: 38%. Jul: 51%. Aug: 54%. Sep: 56%. Oct: 53%. Nov: 57%. Dec: 63%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 10 km/h . Feb: 11 km/h . Mar: 13 km/h . Apr: 15 km/h . May: 16 km/h . Jun: 15 km/h . Jul: 14 km/h . Aug: 13 km/h . Sep: 13 km/h . Oct: 12 km/h . Nov: 10 km/h . Dec: 9 km/h .
Sunshine
Sunshine
Sunshine: Jan: 9h. Feb: 10h. Mar: 10h. Apr: 11h. May: 13h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 11h. Oct: 11h. Nov: 9h. Dec: 9h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 24°C . Feb: 22°C . Mar: 22°C . Apr: 25°C . May: 28°C . Jun: 31°C . Jul: 34°C . Aug: 35°C . Sep: 34°C . Oct: 32°C . Nov: 29°C . Dec: 26°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 6. Nov: UV 5. Dec: UV 4.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 11 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 37°C | Aug · 37°C |
| Coldest month | Jan 2025 · 10°C | Jan · 11°C |
| Wettest month | Dec 2025 · 172 mm | Feb · 59 mm |
| Windiest month | May 2025 · 17 km/h | May · 16 km/h |
Month-by-Month Weather Table
January
Good 
February
Good March best
Excellent April best
Excellent May
Good June
Fair July
Poor August
Poor September
Fair October best
Excellent November best
Excellent December best
Excellent | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 19°C / 11°C | 17°C / 9°C | 4days (55 mm) Good | 9.1h Good | 64% Muggy | 4.4 Moderate | Good | View Details |
| February | 20°C / 12°C | 19°C / 10°C | 5days (59 mm) Good | 9.6h Good | 62% Muggy | 5.1 High | Good | View Details |
| March best | 24°C / 15°C | 24°C / 14°C | 4days (35 mm) Good | 10.3h Excellent | 55% Moderate | 6.2 High | Excellent | View Details |
| April best | 28°C / 19°C | 29°C / 18°C | 2days (10 mm) Excellent | 11.3h Excellent | 44% Moderate | 7.4 Very High | Excellent | View Details |
| May | 33°C / 24°C | 35°C / 23°C | 1days (8 mm) Excellent | 12.5h Excellent | 35% Comfortable | 7.9 Very High | Good | View Details |
| June | 37°C / 27°C | 40°C / 28°C | 0days (0 mm) Excellent | 13h Excellent | 38% Comfortable | 8.2 Very High | Fair | View Details |
| July | 37°C / 29°C | 42°C / 33°C | 0days (2 mm) Excellent | 12.6h Excellent | 51% Moderate | 8.2 Very High | Poor | View Details |
| August | 37°C / 29°C | 42°C / 34°C | 1days (2 mm) Excellent | 11.9h Excellent | 54% Moderate | 7.9 Very High | Poor | View Details |
| September | 35°C / 27°C | 39°C / 31°C | 0days (1 mm) Excellent | 11h Excellent | 56% Moderate | 7.2 Very High | Fair | View Details |
| October best | 31°C / 23°C | 33°C / 24°C | 1days (3 mm) Excellent | 10.6h Excellent | 53% Moderate | 6 High | Excellent | View Details |
| November best | 26°C / 17°C | 25°C / 17°C | 3days (34 mm) Excellent | 9.4h Good | 57% Moderate | 4.7 Moderate | Excellent | View Details |
| December best | 21°C / 13°C | 20°C / 12°C | 4days (50 mm) Good | 9h Good | 63% Muggy | 3.9 Moderate | Excellent | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Jam are March, April, October, November, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Jam, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Jam is August, with average daytime highs of 37°C (99°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Jam is January, with average overnight lows of 11°C (51°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Jam is February, averaging 59mm of precipitation across 5 rainy days. An umbrella or waterproof jacket is essential.
Jam receives approximately 130 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Jam.
The least favorable months to visit Jam are July, August, September, primarily due to extreme heat, oppressive humidity. For the best conditions, consider March, April, October, November, December instead.
The annual average UV index in Jam is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Jam is 53%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in January, March, April, May, June, July, August, September, October, November, December average 29°C (84°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Jam are 13 km/h (8 mph). The windiest month is May with peak winds reaching 16 km/h (10 mph) (gusts up to 45 km/h / 28 mph).
Jam averages 20 clear-sky days per month with overall cloud cover around 20%. The clearest skies occur in September.
The annual average dew point in Jam is 14°C (57°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Jam has a Hot Semi-Arid climate, classified as BSh under the Köppen system. Arid climates have very low rainfall relative to temperature, with large swings between daytime heat and cool nights.
The 'feels like' temperature in Jam ranges from 21°C (70°F) to 30°C (86°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Jam, with a climate score of 5.1/10. Consider visiting during March, April, October, November, December instead for better conditions.
For June in Jam, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. With average highs of 37°C (98°F) and 0 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.
Last updated: