Climate averages 1991–2020
Chālūs weather
in October.
A mild, very wet month: the 5th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Chālūs: daytime highs average 21.0°C and nights cool to about 17.6°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 205 mm of rain on roughly 15 days, which makes October a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 17 min on an average October day.
The nearest other city in this atlas is Āmol (86 km away). In October its highs average 21.1°C, about as warm as Chālūs, with 185 mm of rain.
Among the 128 cities listed in Iran, Chālūs ranks joint 102nd of 128 for the warmest October highs and 127th of 128 for the driest October (rainfall, lowest first). The mean October high of those 128 cities is 24.7°C; Chālūs is 3.7°C cooler than that mean.
From October to November, average highs fall by 5.0°C to 16.0°C, and monthly rainfall rises from 205 mm to 218 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Āmol in OctoberIran · 86 kmHigh 21.1°C · Low 13.9°C · 185 mm rain
- Tajrīsh in OctoberIran · 95 kmHigh 19.5°C · Low 11.2°C · 21 mm rain
- Mehestan in OctoberIran · 96 kmHigh 19.9°C · Low 9.7°C · 14 mm rain
- Karaj in OctoberIran · 99 kmHigh 21.8°C · Low 9.3°C · 14 mm rain
- Kamālshahr in OctoberIran · 101 kmHigh 21.9°C · Low 10.7°C · 16 mm rain
- Naz̧arābād in OctoberIran · 107 kmHigh 21.8°C · Low 10.9°C · 20 mm rain
- Tehran in OctoberIran · 107 kmHigh 22.6°C · Low 12.0°C · 21 mm rain
- Pardīs in OctoberIran · 107 kmHigh 17.6°C · Low 9.5°C · 20 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.