Climate averages 1991–2020
Chālūs weather
in August.
A warm, moderately wet month: the warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Chālūs: daytime highs average 26.9°C and nights cool to about 23.7°C. By daytime temperature it is the warmest month of the year.
Expect about 60 mm of rain on roughly 11 days, which makes August a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 34 min on an average August day.
The nearest other city in this atlas is Āmol (86 km away). In August its highs average 27.5°C, 0.7°C warmer than Chālūs, with 79 mm of rain.
Among the 128 cities listed in Iran, Chālūs ranks 126th of 128 for the warmest August highs and 123rd of 128 for the driest August (rainfall, lowest first). The mean August high of those 128 cities is 35.2°C; Chālūs is 8.3°C cooler than that mean.
From August to September, average highs fall by 2.6°C to 24.2°C, and monthly rainfall rises from 60 mm to 148 mm.
The annual picture
August 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
Chālūs climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.6°C7.1°C | 7.1°C | 142 | 15.3 | 10.010 h |
| February | 10.4°C6.5°C | 6.5°C | 125 | 14.4 | 10.811 h |
| March | 12.8°C8.3°C | 8.3°C | 100 | 14.1 | 11.912 h |
| April | 16.6°C11.8°C | 11.8°C | 68 | 11.4 | 13.113 h |
| May | 20.9°C16.7°C | 16.7°C | 48 | 10.0 | 14.114 h |
| June | 24.3°C20.8°C | 20.8°C | 49 | 8.9 | 14.615 h |
| July | 26.2°C23.0°C | 23.0°C | 59 | 10.8 | 14.414 h |
| August, selected | 26.9°C23.7°C | 23.7°C | 60 | 11.3 | 13.614 h |
| September | 24.2°C21.1°C | 21.1°C | 148 | 14.6 | 12.412 h |
| October | 21.0°C17.6°C | 17.6°C | 205 | 15.4 | 11.311 h |
| November | 16.0°C12.7°C | 12.7°C | 218 | 15.8 | 10.310 h |
| December | 12.6°C9.2°C | 9.2°C | 156 | 14.6 | 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
August in nearby cities
- Āmol in AugustIran · 86 kmHigh 27.5°C · Low 21.5°C · 79 mm rain
- Tajrīsh in AugustIran · 95 kmHigh 31.3°C · Low 22.2°C · 4.2 mm rain
- Mehestan in AugustIran · 96 kmHigh 32.1°C · Low 20.1°C · 2.5 mm rain
- Karaj in AugustIran · 99 kmHigh 34.0°C · Low 20.2°C · 1.7 mm rain
- Kamālshahr in AugustIran · 101 kmHigh 34.0°C · Low 21.6°C · 2.0 mm rain
- Naz̧arābād in AugustIran · 107 kmHigh 34.1°C · Low 20.9°C · 2.8 mm rain
- Tehran in AugustIran · 107 kmHigh 34.6°C · Low 23.4°C · 4.2 mm rain
- Pardīs in AugustIran · 107 kmHigh 29.3°C · Low 19.6°C · 5.0 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 Chālūs) is explained once on the Chālūs year overview and on the Sources, method and limits page.