Climate averages 1991–2020

Shahreẕā weather
in January.

A cold, fairly dry month: the coolest and the wettest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 7.7°C Daytime mean, January
Average low -4.4°C Night-time mean, January
Rainfall 25 mm 5 days with ≥1 mm
Daylight 10 h Sunrise to sunset, per day
Every month in Shahreẕā · average highYear overview

January is a cold month in Shahreẕā: daytime highs average 7.7°C and nights cool to about -4.4°C. By daytime temperature it is the coolest month of the year.

Expect about 25 mm of rain on roughly 5 days, which makes January a fairly dry month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 18 min on an average January day.

The nearest other city in this atlas is Bahārestān (54 km away). In January its highs average 9.0°C, 1.3°C warmer than Shahreẕā, with 15 mm of rain.

Among the 128 cities listed in Iran, Shahreẕā ranks joint 65th of 128 for the warmest January highs and joint 20th of 128 for the driest January (rainfall, lowest first). The mean January high of those 128 cities is 8.6°C; Shahreẕā is 0.9°C cooler than that mean.

From January to February, average highs rise by 3.1°C to 10.8°C, and monthly rainfall falls from 25 mm to 19 mm.

The annual picture

January in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -10-50510152025303540 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Shahreẕā climate table

1991–2020
Monthly climate averages for Shahreẕā, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January, selected 7.7°C-4.4°C-4.4°C254.610.310 h
February 10.8°C-2.3°C-2.3°C193.711.011 h
March 15.6°C1.4°C1.4°C193.912.012 h
April 21.2°C6.8°C6.8°C143.912.913 h
May 26.9°C12.1°C12.1°C8.32.613.814 h
June 32.5°C17.5°C17.5°C0.90.414.214 h
July 34.6°C20.8°C20.8°C0.40.114.014 h
August 33.2°C19.6°C19.6°C0.20.113.313 h
September 29.4°C14.8°C14.8°C0.10.012.412 h
October 22.9°C9.0°C9.0°C3.01.111.411 h
November 15.0°C2.6°C2.6°C162.610.611 h
December 10.2°C-1.8°C-1.8°C183.810.110 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

January in nearby cities

Distance from Shahreẕā

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Shahreẕā) is explained once on the Shahreẕā year overview and on the Sources, method and limits page.