Climate averages 1991–2020
Lāhījān weather
in May.
A warm, moderately wet month: the 5th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Lāhījān: daytime highs average 23.1°C and nights cool to about 14.3°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 50 mm of rain on roughly 9 days, which makes May a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 09 min on an average May day.
The nearest other city in this atlas is Rasht (38 km away). In May its highs average 22.2°C, 0.9°C cooler than Lāhījān, with 55 mm of rain.
Among the 128 cities listed in Iran, Lāhījān ranks joint 102nd of 128 for the warmest May highs and 116th of 128 for the driest May (rainfall, lowest first). The mean May high of those 128 cities is 27.8°C; Lāhījān is 4.7°C cooler than that mean.
From May to June, average highs rise by 3.6°C to 26.7°C, and monthly rainfall rises from 50 mm to 64 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
Lāhījān climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 11.6°C2.3°C | 2.3°C | 116 | 12.2 | 9.910 h |
| February | 11.6°C2.3°C | 2.3°C | 122 | 12.3 | 10.811 h |
| March | 14.8°C5.5°C | 5.5°C | 115 | 13.2 | 11.912 h |
| April | 18.8°C9.6°C | 9.6°C | 81 | 10.6 | 13.113 h |
| May, selected | 23.1°C14.3°C | 14.3°C | 50 | 8.6 | 14.114 h |
| June | 26.7°C18.5°C | 18.5°C | 64 | 8.4 | 14.715 h |
| July | 28.5°C21.2°C | 21.2°C | 72 | 9.9 | 14.514 h |
| August | 28.9°C21.5°C | 21.5°C | 84 | 11.5 | 13.614 h |
| September | 25.2°C18.6°C | 18.6°C | 158 | 14.1 | 12.512 h |
| October | 21.7°C14.4°C | 14.4°C | 174 | 14.3 | 11.311 h |
| November | 16.8°C8.9°C | 8.9°C | 168 | 13.6 | 10.210 h |
| December | 13.4°C4.6°C | 4.6°C | 124 | 11.7 | 9.710 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
- Rasht in MayIran · 38 kmHigh 22.2°C · Low 13.8°C · 55 mm rain
- Bandar-e Anzalī in MayIran · 57 kmHigh 19.8°C · Low 17.0°C · 29 mm rain
- Qazvin in MayIran · 104 kmHigh 24.0°C · Low 11.5°C · 33 mm rain
- Moḩammadīyeh in MayIran · 110 kmHigh 24.2°C · Low 10.9°C · 19 mm rain
- Alvand in MayIran · 113 kmHigh 24.8°C · Low 11.1°C · 33 mm rain
- Tākestān in MayIran · 129 kmHigh 25.8°C · Low 10.8°C · 22 mm rain
- Chālūs in MayIran · 140 kmHigh 20.9°C · Low 16.7°C · 48 mm rain
- Zanjan in MayIran · 147 kmHigh 21.8°C · Low 8.5°C · 58 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 Lāhījān) is explained once on the Lāhījān year overview and on the Sources, method and limits page.