Climate Insights for Khorramshahr

The climate in Khorramshahr is hot. The average annual temperature is 28°C and approximately 182mm of precipitation falls per year. November is the wettest month, receiving around 57mm of rainfall. Khorramshahr is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 9°C.

Khorramshahr has a wide annual temperature range, spanning 39°C from the coldest to warmest months. July is the hottest month, with daytime highs reaching 48°C and an average of 40°C. January is the coolest month, with minimum temperatures around 9°C and an average of 14°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.

Khorramshahr is a quite dry location, receiving approximately 182mm of precipitation annually, which averages out to around 15mm per month. The wettest month is November, averaging 57mm of rainfall. December and March also tend to see above-average precipitation. The driest month is June, with just 0mm. That's 57mm less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Khorramshahr is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 29km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in November, with average winds dropping to 18km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 11km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 20km/h in winter, 24km/h in spring, 26km/h in summer, 20km/h in autumn.

It is currently spring in Khorramshahr, which began on March 20, 2026. Khorramshahr is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 48°C, while the coldest stretch bottoms out in January near 9°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Khorramshahr is during February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 34mm per month. By contrast, July can be uncomfortably hot with highs reaching 48°C, while January is the coldest period with lows dropping to 9°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Khorramshahr based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.