Climate averages 1991–2020
Īlām weather
in May.
A warm, fairly dry month: the 5th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Īlām: daytime highs average 25.7°C and nights cool to about 12.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 21 mm of rain on roughly 5 days, which makes May a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 53 min on an average May day.
The nearest other city in this atlas is Eslāmābād-e Gharb (53 km away). In May its highs average 24.9°C, 0.8°C cooler than Īlām, with 25 mm of rain.
Among the 128 cities listed in Iran, Īlām ranks 70th of 128 for the warmest May highs and joint 70th of 128 for the driest May (rainfall, lowest first). The mean May high of those 128 cities is 27.8°C; Īlām is 2.1°C cooler than that mean.
From May to June, average highs rise by 6.5°C to 32.2°C, and monthly rainfall falls from 21 mm to 1.0 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
Īlām climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.3°C-1.7°C | -1.7°C | 89 | 9.8 | 10.210 h |
| February | 8.9°C-0.8°C | -0.8°C | 88 | 10.6 | 11.011 h |
| March | 13.2°C2.8°C | 2.8°C | 96 | 11.1 | 12.012 h |
| April | 18.9°C7.5°C | 7.5°C | 67 | 9.4 | 13.013 h |
| May, selected | 25.7°C12.7°C | 12.7°C | 21 | 4.9 | 13.914 h |
| June | 32.2°C17.7°C | 17.7°C | 1.0 | 0.3 | 14.314 h |
| July | 35.3°C20.8°C | 20.8°C | 0.3 | 0.1 | 14.214 h |
| August | 35.3°C20.6°C | 20.6°C | 0.2 | 0.0 | 13.413 h |
| September | 30.9°C16.7°C | 16.7°C | 1.1 | 0.3 | 12.412 h |
| October | 23.9°C11.8°C | 11.8°C | 31 | 4.2 | 11.411 h |
| November | 14.7°C4.9°C | 4.9°C | 73 | 7.9 | 10.510 h |
| December | 9.8°C0.7°C | 0.7°C | 78 | 8.6 | 10.010 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
- Eslāmābād-e Gharb in MayIran · 53 kmHigh 24.9°C · Low 12.4°C · 25 mm rain
- Kermanshah in MayIran · 96 kmHigh 24.9°C · Low 12.1°C · 30 mm rain
- Kūhdasht in MayIran · 111 kmHigh 27.0°C · Low 12.0°C · 22 mm rain
- Khānaqīn in MayIraq · 124 kmHigh 35.2°C · Low 20.4°C · 10 mm rain
- Al-Kut in MayIraq · 137 kmHigh 38.6°C · Low 24.3°C · 7.4 mm rain
- Al Miqdādīyah in MayIraq · 142 kmHigh 36.7°C · Low 22.9°C · 6.5 mm rain
- Kelar in MayIraq · 150 kmHigh 34.6°C · Low 20.2°C · 12 mm rain
- An Nu‘mānīyah in MayIraq · 153 kmHigh 38.6°C · Low 24.1°C · 7.4 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 Īlām) is explained once on the Īlām year overview and on the Sources, method and limits page.