Kashan climate
Kashan (Iran) has a hot desert climate (Köppen BWh). The average temperature over the year is 20 °C67 °F, and about 156 mm6.2 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Kashan climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1254 | 133 | 744 | 210.8 |
| Feb | 1559 | 236 | 948 | 150.6 |
| Mar | 2170 | 744 | 1457 | 251.0 |
| Apr | 2679 | 1253 | 1966 | 281.1 |
| May | 3391 | 1763 | 2577 | 110.4 |
| Jun | 38101 | 2272 | 3087 | 70.3 |
| Jul | 40105 | 2576 | 3391 | 10.0 |
| Aug | 39102 | 2374 | 3188 | 00.0 |
| Sep | 3595 | 2067 | 2781 | 10.0 |
| Oct | 2883 | 1458 | 2170 | 80.3 |
| Nov | 1966 | 644 | 1355 | 200.8 |
| Dec | 1457 | 236 | 846 | 190.7 |
| Year | 40105 | 133 | 2067 | 1566.2 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 58% | 48% | 3.1 | 10:07 |
| Feb | 54% | 49% | 4.1 | 10:55 |
| Mar | 47% | 51% | 5.3 | 11:53 |
| Apr | 45% | 57% | 6.0 | 12:00 |
| May | 34% | 47% | 7.1 | 13:55 |
| Jun | 22% | 30% | 8.2 | 14:24 |
| Jul | 21% | 34% | 7.8 | 14:12 |
| Aug | 20% | 27% | 7.5 | 13:25 |
| Sep | 22% | 26% | 6.4 | 12:20 |
| Oct | 33% | 36% | 4.8 | 11:16 |
| Nov | 51% | 45% | 3.5 | 10:20 |
| Dec | 58% | 42% | 2.9 | 9:54 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Kashan is like
The warmest month is July, with an average high of 40 °C105 °F and a low of 25 °C76 °F. The coldest is January, when highs average 12 °C54 °F and lows 1 °C33 °F. Seasons are strongly marked: the warmest month is on average 26.1 °C46.9 °F warmer than the coldest.
It is dry, with about 156 mm6.2 in of precipitation per year. The wettest three-month stretch is February–April, which brings 44% of the annual total. Months with less than 20 mm0.8 in on average: February and May–December. The wettest month is April (28 mm1.1 in), the driest is August (0 mm0.0 in).
Relative humidity ranges from 20% in August to 58% in January. The clearest skies (lowest average cloud amount, 26%) are typical of September. Average wind speed near the ground ranges from 8 km/h (5 mph) in December to 13 km/h (8 mph) in July. Daylight lasts from about 9.9 hours in December to 14.4 hours in June.
Best time to visit Kashan
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March and April and October and November: average highs of 19 °C66 °F to 28 °C83 °F with 8 mm0.3 in to 28 mm1.1 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 40 °C105 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Kashan
- Winter (December–February) — highs 1254 to 15 °C59 °F, lows 133 to 2 °C36 °F, about 18 mm0.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2170 to 33 °C91 °F, lows 744 to 17 °C63 °F, about 21 mm0.8 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 38101 to 40 °C105 °F, lows 2272 to 25 °C76 °F, about 3 mm0.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1966 to 35 °C95 °F, lows 644 to 20 °C67 °F, about 10 mm0.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Kashan compares
Compared with Qom, about 89 km to the northwest, Kashan is on average 0.7 °C1.2 °F warmer and receives 24% less precipitation (156 mm6.2 in vs 207 mm8.1 in). The difference is largest in December (1.1 °C2 °F warmer).
Of the 82 places in Iran covered by World Climates, Kashan is the 21st warmest by annual mean temperature and the 70th wettest by annual precipitation. See all of them on the Iran climate page.
Places in other countries with the most similar temperature and rainfall pattern: Kunduz (Afghanistan, BSh), Bokhtar (Tajikistan, BSh) and Deir ez-Zor (Syria, BWh).
Nearby places
- Kashan 2 km · 20 °C67 °F · 156 mm6.2 in
- Qom 89 km · 19 °C66 °F · 207 mm8.1 in
- Shahin Shahr 126 km · 16 °C61 °F · 184 mm7.2 in
- Khomeyni Shahr 145 km · 16 °C61 °F · 212 mm8.3 in
- Isfahan 150 km · 16 °C62 °F · 164 mm6.5 in
- Saveh 152 km · 18 °C65 °F · 248 mm9.8 in
- Arak 160 km · 14 °C57 °F · 219 mm8.6 in
- Qarchak 161 km · 18 °C65 °F · 334 mm13 in
Frequently asked questions
What is the warmest month in Kashan?
July is the warmest month in Kashan, with an average high of 40 °C (105 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Kashan?
January is the coldest month, with an average high of 12 °C (54 °F) and an average low of 1 °C (33 °F).
When does it rain the most in Kashan?
April is the wettest month with about 28 mm (1.1 in) of precipitation; August is the driest with about 0 mm (0.0 in).
What is the best time to visit Kashan?
Judging by long-term averages, the most comfortable months are March and April and October and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 1,618 m, while Kashan lies at about 942 m. Temperatures on this page were therefore adjusted by +4.4 °C7.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.