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Contents
- The climate of Isfahan
- The best time to visit Isfahan
- The worst time to visit Isfahan
- Spring weather in Isfahan
- Summer weather in Isfahan
- Autumn weather in Isfahan
- Winter weather in Isfahan
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall days
- Average daylight
- Average sunshine
- Average UV index
The climate of Isfahan
Isfahan, a city situated in central Iran, enjoys a semi-arid, or BSk, climate under Köppen's climate classification. This kind of mid-latitude steppe climate is characterized by vast seasonal changes in temperature and low amounts of rainfall throughout the year. Isfahan's climate is distinctly marked by hot summers and cold winters, with significant variations in temperature between night and day.
On an annual cycle, it can be discerned that the temperatures range from -2.4°C (27.7°F) to 36.4°C (97.5°F), revealing a significant range of temperature fluctuation. It is most warm from June to August with the highest average temperature reaching 36.4°C (97.5°F) in July. Alternatively, the coldest temperatures usually occur in January, dropping as low as -2.4°C (27.7°F). It should be noted that relative humidity in Isfahan follows an inverse trend to the temperature, being highest in winter (up to 60%) and lowest in summer (down to 23%).
Rainfall in Isfahan is sporadic and modest; typically, rainfall occurs most heavily in winter and spring with the highest rainfall recorded in December with 20mm (0.79"). The opposite is found during dry summer months where average rainfall can fall to 0mm (0") in August. The city, however, enjoys an average of 8.9 to 11.5 sunlight hours per day from May through August.
On an annual cycle, it can be discerned that the temperatures range from -2.4°C (27.7°F) to 36.4°C (97.5°F), revealing a significant range of temperature fluctuation. It is most warm from June to August with the highest average temperature reaching 36.4°C (97.5°F) in July. Alternatively, the coldest temperatures usually occur in January, dropping as low as -2.4°C (27.7°F). It should be noted that relative humidity in Isfahan follows an inverse trend to the temperature, being highest in winter (up to 60%) and lowest in summer (down to 23%).
Rainfall in Isfahan is sporadic and modest; typically, rainfall occurs most heavily in winter and spring with the highest rainfall recorded in December with 20mm (0.79"). The opposite is found during dry summer months where average rainfall can fall to 0mm (0") in August. The city, however, enjoys an average of 8.9 to 11.5 sunlight hours per day from May through August.
The best time to visit Isfahan
Considering rainfall, temperature, and hours of possible sunlight, the best time to visit Isfahan would be from April to June and again from September to November. During these months, the outdoor conditions are most conducive for sightseeing and other outdoor activities. April and May, in particular, enjoy a warm temperature range of 16.8°C (62.2°F) to 28°C (82.4°F), low rainfall between 18mm (0.71") to 19mm (0.75"), and ample daylight with an average of 12 to 13 hours.
The worst time to visit Isfahan
On the contrary, visiting Isfahan in the peak of summer - July and August - or in the depth of winter - December, January and February - may pose certain discomforts to tourists. The temperature during the summer months tend to rise too high, reaching up to 36.4°C (97.5°F), with minimal relief provided by rainfall. The winter months, likewise, can be quite challenging with low temperatures dropping down to -2.4°C (27.7°F) and the city also experiences the maximum rainfall during this period.
Spring weather in Isfahan
Spring in Isfahan, which spans from March to May, is marked by warmer temperatures, increased daylight, and varying humidity. Temperatures during these months range from 4.5°C (40.1°F) to 28°C (82.4°F). There is still rainfall during this period, especially in March and April with 18mm (0.71") and 19mm (0.75"), respectively. The length of daylight gradually increases and ranges from 12 hours in March to 13.8 hours in May.
Summer weather in Isfahan
Summer in Isfahan lasts from June to August, with temperatures soaring high, humidity dropping, and rainfall becoming scarce. The city experiences its highest temperatures in July, at an average high of 36.4°C (97.5°F). Despite the intense heat, the low relative humidity, ranging from 23% to 24%, can make the heat more bearable. Rainfall virtually disappears, with a hardly noticeable 1mm (0.04") in July and 0mm (0") in August.
Autumn weather in Isfahan
The autumn months from September to November in Isfahan bring more agreeable temperatures, ranging from 15.1°C (59.2°F) to 31.2°C (88.2°F). Rainfall is also more frequent than in summer, but still quite low. The longest possible sunlight is 12.4 hours in September, but this decreases to 10.5 hours by November.
Winter weather in Isfahan
Lastly, winter in Isfahan, which spans from December to February, features low temperatures, increased humidity, and the most rainfall seen throughout the year. The temperatures plunge to their lowest at -2.4°C (27.7°F) in January. Relative humidity is at its peak, sometimes reaching up to 60%, and rainfall peaks at 20mm (0.79") in December. Despite the cold conditions, the city does receive 10 to 11 hours of daylight during these months.
Weather in January
In Isfahan, Iran, January marks relatively cold conditions. The lowest minimum temperature occurs in this month, reaching lows of -2.4°C (27.7°F). With the year just starting, the city wraps itself in a cool blanket of fog and frost. Weather in January »
Weather in February
As February arrives in Isfahan, signs of temperatures slightly starting to rise become evident. There is a shift from the bone-chilling cold of January, with minimum temperatures crawling up to -0.2°C (31.6°F). The city slowly starts to shed its winter chill, paving the way for the arrival of a warmer season. Weather in February »
Weather in March
In March, Isfahan begins to experience a significant shift in weather. A leap in minimum temperatures is recorded, as they rise to a more pleasant 4.5°C (40.1°F). Adding to the charm of the city are longer hours of daylight and sunshine. Weather in March »
Weather in April
April welcomes spring in Isfahan, rendering beautiful hues of green to its flora. A positive change is observed in the minimum temperature, which hovers around the mid-9.4°C (15.1°F). With the snow and freezing temperatures of winter now in the rearview mirror, April is a time of milder temperatures and refreshing breezes. Weather in April »
Weather in May
May signals the advent of warmer days in Isfahan. The minimum temperature records a steep increase to 14.2°C (57.6°F). Temperatures during the day become hot and the beauty of Isfahan under the bright, azure sky is sight to behold. Weather in May »
Weather in June
June is the beginning of true summer heat in Isfahan. A maximum temperature of 34.1°C (93.4°F) makes it one of the hottest months of the year. People seek solace in the cool indoor spaces, while the sunny weather brings vibrancy to the city's architecture. Weather in June »
Weather in July
In July, Isfahan experiences the peak of its summer heat. The city records its highest temperature of the year, a sweltering 36.4°C (97.5°F). Perhaps it is best to stay indoors between the daytime hours, reserving outdoor activities for the cooler evening hours. Weather in July »
Weather in August
As August unfolds, the heat in Isfahan remains intense. It still remains the part of the city’s hottest period, with maximum temperatures hitting 35.1°C (95.2°F). Late afternoon and evening become ideal for outdoor activities as to avoid the punishing sun. Weather in August »
Weather in September
September marks the beginning of the transition into the milder autumn season in Isfahan. The temperature begin its slow slide downwards, presenting more bearable conditions. However, with the city recording its maximum of 31.2°C (88.2°F), the residual heat of summer days can still be felt. Weather in September »
Weather in October
October brings with it a significant drop in temperature as Isfahan steps into the thick of autumn. Maximum temperatures see a slump, coming down to a comfortable 24.4°C (75.9°F). With less heat and more pleasant temperatures, it is an ideal time to explore the city and experience local culture. Weather in October »
Weather in November
In November, Isfahan starts to feel the cold encroach once again. The minimum temperature drops to 3.6°C (38.5°F) making it a noticeable transition from the pleasantly cool temperatures of the previous month. During this month, one can witness a blend of seasons as the crispness of fall mingles with the approaching chill of winter. Weather in November »
Weather in December
December marks the return of winter in Isfahan. With the minimum temperature plunging to -0.9°C (30.4°F), is the beginnings of cold nights. Despite this, the city decks itself in festive cheer as the end of the year approaches. Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Isfahan?
Isfahan's coldest weather arrives in January, when temperatures average a high of 8.8°C (47.8°F) and a low of -2.4°C (27.7°F).
What is the most humid month in Isfahan?
The most humid month in Isfahan is January, with an average relative humidity of 60%.
How much does it rain in Isfahan?
In Isfahan, during the entire year, the rain falls for 23.5 days and collects up to 113mm (4.45") of precipitation.
When does it snow in Isfahan?
Months with snowfall are January through April, November and December.
What is the snowiest month in Isfahan?
The month with the most snowfall days in Isfahan is January, when snow falls for 3.2 days.
How many days does it snow in Isfahan?
Throughout the year, in Isfahan, Iran, there are 7.8 snowfall days.
What is the month with the least sunshine in Isfahan?
January has the least sunshine of the year in Isfahan, Iran, with an average of 6.6h of sunshine.
What are the months with the lowest UV index in Isfahan?
The months with the lowest UV index are January and December, with an average maximum UV index of 3.
When it does not snow in Isfahan?
May through October are months without snowfall in Isfahan, Iran.
What are the months with the highest UV index in Isfahan?
The months with the highest UV index in Isfahan are May through August, with an average maximum UV index of 12.
What are the least humid months in Isfahan?
The months with the lowest humidity are June and July, with an average relative humidity of 23%.
When are the longest days in Isfahan?
With an average of 14h and 18min of daylight, June has the longest days of the year.
What month has the most sunshine in Isfahan?
June has the most sunshine of the year, with an average of 11.5h of sunshine.
What month is the hottest in Isfahan?
With average high temperatures of 36.4°C (97.5°F) and lows of 21.5°C (70.7°F), July is the warmest month.
What is the driest month in Isfahan?
September is the only month when rain does not fall.
When does it rain in Isfahan?
Months with rainfall in Isfahan, Iran, are January through August, October through December.
What is the rainiest month in Isfahan?
The month with the most rainfall in Isfahan, Iran, is December, when the rain falls for 3.7 days and typically aggregates up to 20mm (0.79") of precipitation.
What is the month with the shortest days in Isfahan?
With an average of 10h and 0min of daylight, December has the shortest days of the year.
Is there Daylight Saving Time (DST) in Isfahan?
Isfahan does not utilize Daylight Saving Time (DST). +0330 timezone is used over the entire year.
Average temperature
Isfahan, Iran
The warmest month (with the highest average high temperature) is July (36.4°C).
The month with the lowest average high temperature is January (8.8°C).
The month with the highest average low temperature is July (21.5°C).
The coldest month (with the lowest average low temperature) is January (-2.4°C).
Average humidity
Isfahan, Iran
The month with the highest relative humidity is January (60%).
The months with the lowest relative humidity are June and July (23%).
Average rainfall
Isfahan, Iran
- Average rainfall in January:
17.1mm - Average rainfall in February:
14.1mm - Average rainfall in March:
18.2mm - Average rainfall in April:
19.2mm - Average rainfall in May:
8.8mm - Average rainfall in June:
0.6mm
- Average rainfall in July:
0.7mm - Average rainfall in August:
0.2mm - Average rainfall in September:
0mm - Average rainfall in October:
4.1mm - Average rainfall in November:
9.9mm - Average rainfall in December:
19.6mm
The wettest month (with the highest rainfall) is December (19.6mm).
The driest month (with the least rainfall) is September (0mm).
Average rainfall days
Isfahan, Iran
- Average rainfall days in January:
4 days - Average rainfall days in February:
2.9 days - Average rainfall days in March:
3.8 days - Average rainfall days in April:
3.5 days - Average rainfall days in May:
2 days - Average rainfall days in June:
0.2 days
- Average rainfall days in July:
0.3 days - Average rainfall days in August:
0.1 days - Average rainfall days in September:
0 days - Average rainfall days in October:
0.8 days - Average rainfall days in November:
2.2 days - Average rainfall days in December:
3.7 days
The month with the highest number of rainy days is January (4 days).
The month with the least rainy days is September (0 days).
Average snowfall days
Isfahan, Iran
- Average snowfall days in January:
3.2 days - Average snowfall days in February:
1.7 days - Average snowfall days in March:
0.7 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
1.9 days
The month with the highest number of snowfall days is January (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Isfahan, Iran
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 4min - Average sunshine in February:
7h and 4min - Average sunshine in March:
7h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 4min - Average sunshine in June:
11h and 3min
- Average sunshine in July:
11h and 1min - Average sunshine in August:
10h and 4min - Average sunshine in September:
10h and 2min - Average sunshine in October:
8h and 5min - Average sunshine in November:
7h and 3min - Average sunshine in December:
6h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 6h and 36min).
Average UV index
Isfahan, Iran
The months with the highest UV index are May, June, July and August (UV index 12).
The months with the lowest UV index are January and December (UV index 3).
Isfahan, Iran
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