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Karaj Weather in May
Karaj in May sees high daytime temperatures of 24°C (75°F) and nighttime lows of 13°C (55°F). Low rainfall is typical, with around 24 mm (0.9 in) for the month.
Rainfall in Karaj in May
The climate data from previous years indicates about 10 days of rain, averaging 24 mm (0.9 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Karaj in May
The excellent temperature in Karaj in May makes it a solid month to visit, with 24°C (75°F) during the day and 13°C (55°F) at night. This kind of day-to-night contrast is typical for this time of year. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Karaj in May
Expect a lot of sunshine this month, with about 281 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, September and October typically offer the best weather for Karaj.
Karaj Temperature in May
Min Temperature
13°C (55°F)
Max Temperature
24°C (75°F)
Chance of Rain
34%
Precipitation
24 mm (0.9 in)
Rainy days
10 days
Humidity
44%
Sunshine
281 hours
Percentage Sunshine
Karaj Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Karaj - and find the best time to visit.
Daily Historical Temperatures
42-year average (1976-2025)
Based on our historical records, temperatures in Karaj typically rise from around 24°C (75°F) at the start of May to approximately 31°C (88°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 20°C (68°F).
Average temperatures in May
Daily Historical Precipitation
42-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Karaj in May
Browse day-by-day weather records for Karaj spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Karaj historical weather extremes in May
According to our 22 years of weather records for Karaj, the following extremes were recorded between 2004 and 2026.
- On May 26, 2008, temperatures climbed to 37°C (99°F), marking the warmest May day on record.
- Karaj experienced its chilliest May day on May 17, 2007, reaching only 18°C (64°F).
- The coldest night in May in Karaj was on May 7, 2005, with a minimum of 6°C (43°F).
Best Places in Iran in May
Find out more about the weather in Iran and which places have the best travel conditions in this month. See all of Iran in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Karaj in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Pack a light rain jacket or compact umbrella for occasional showers. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Karaj in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping10/10 -
Outdoor sports10/10
Karaj 3-Day Forecast
More climate data for Karaj
Temperature Rainfall Sunshine Humidity
See the full Karaj climate overview or explore weather in Iran.
Popular in May
Where to go in May - average daytime high across popular destinations.
Bandar Abbas
37°C (99°F) Yazd
31°C (88°F) Maḩmūdābād31°C (88°F) Isfahan30°C (86°F) Shiraz30°C (86°F) Tehran26°C (79°F) Karaj24°C (75°F) Hamadān
24°C (75°F) Bucket list
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