Climate averages 1991–2020
Khorramshahr weather
in May.
A very hot, very dry month: the 5th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a very hot month in Khorramshahr: daytime highs average 40.5°C and nights cool to about 25.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 3.9 mm of rain on fewer than one day, which makes May a very dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 40 min on an average May day.
The nearest other city in this atlas is Abadan (16 km away). In May its highs average 40.2°C, about as warm as Khorramshahr, with 3.1 mm of rain.
Among the 128 cities listed in Iran, Khorramshahr ranks 1st of 128 for the warmest May highs and 19th of 128 for the driest May (rainfall, lowest first). The mean May high of those 128 cities is 27.8°C; Khorramshahr is 12.7°C warmer than that mean.
From May to June, average highs rise by 4.7°C to 45.2°C, and monthly rainfall falls from 3.9 mm to under 1 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Khorramshahr climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.1°C8.2°C | 8.2°C | 38 | 5.3 | 10.410 h |
| February | 21.1°C9.6°C | 9.6°C | 21 | 3.5 | 11.111 h |
| March | 26.5°C13.8°C | 13.8°C | 25 | 3.5 | 12.012 h |
| April | 33.4°C19.7°C | 19.7°C | 10 | 1.9 | 12.913 h |
| May, selected | 40.5°C25.8°C | 25.8°C | 3.9 | 0.7 | 13.714 h |
| June | 45.2°C30.2°C | 30.2°C | 0.3 | 0.1 | 14.114 h |
| July | 46.6°C32.2°C | 32.2°C | 0.2 | 0.1 | 13.914 h |
| August | 46.6°C31.6°C | 31.6°C | 0.2 | 0.1 | 13.213 h |
| September | 42.8°C27.5°C | 27.5°C | 0.3 | 0.1 | 12.412 h |
| October | 36.2°C22.2°C | 22.2°C | 5.7 | 0.7 | 11.511 h |
| November | 26.0°C15.1°C | 15.1°C | 41 | 3.8 | 10.611 h |
| December | 19.8°C9.9°C | 9.9°C | 37 | 4.9 | 10.210 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Abadan in MayIran · 16 kmHigh 40.2°C · Low 25.7°C · 3.1 mm rain
- Abū al-Kahṣīb in MayIraq · 29 kmHigh 40.4°C · Low 25.6°C · 4.3 mm rain
- Basrah in MayIraq · 39 kmHigh 40.4°C · Low 25.7°C · 4.6 mm rain
- Az Zubayr in MayIraq · 47 kmHigh 40.3°C · Low 25.5°C · 4.6 mm rain
- Umm Qaşr in MayIraq · 52 kmHigh 40.1°C · Low 25.5°C · 2.8 mm rain
- Al Fāw in MayIraq · 59 kmHigh 34.9°C · Low 26.6°C · 2.3 mm rain
- Bandar-e Emam Khomeyni in MayIran · 88 kmHigh 36.5°C · Low 26.4°C · 3.2 mm rain
- Al Qurnah in MayIraq · 96 kmHigh 40.3°C · Low 25.6°C · 5.1 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Khorramshahr) is explained once on the Khorramshahr year overview and on the Sources, method and limits page.