Climate averages 1991–2020

Shīrvān weather
in January.

A cold, fairly dry month: the coolest and the 9th driest of the year.

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

Average high 3.8°C Daytime mean, January

Average low -5.2°C Night-time mean, January

Rainfall 26 mm 5 days with ≥1 mm

Daylight 10 h Sunrise to sunset, per day

January is a cold month in Shīrvān: daytime highs average 3.8°C and nights cool to about -5.2°C. By daytime temperature it is the coolest month of the year.

Expect about 26 mm of rain on roughly 5 days, which makes January a fairly dry month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 54 min on an average January day.

The nearest other city in this atlas is Bojnūrd (54 km away). In January its highs average 5.9°C, 2.1°C warmer than Shīrvān, with 35 mm of rain.

Among the 128 cities listed in Iran, Shīrvān ranks 103rd of 128 for the warmest January highs and joint 22nd of 128 for the driest January (rainfall, lowest first). The mean January high of those 128 cities is 8.6°C; Shīrvān is 4.8°C cooler than that mean.

From January to February, average highs rise by 1.6°C to 5.4°C, and monthly rainfall rises from 26 mm to 34 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

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

Every month, side by side

Shīrvān climate table

1991–2020

Monthly climate averages for Shīrvān, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	3.8°C-5.2°C	-5.2°C	26	5.4	9.910 h
February	5.4°C-4.1°C	-4.1°C	34	6.7	10.811 h
March	11.7°C0.9°C	0.9°C	49	9.2	11.912 h
April	18.3°C6.7°C	6.7°C	38	8.0	13.113 h
May	23.1°C11.6°C	11.6°C	23	5.3	14.214 h
June	28.1°C16.0°C	16.0°C	6.7	1.7	14.715 h
July	30.7°C18.6°C	18.6°C	4.2	1.0	14.514 h
August	29.9°C17.6°C	17.6°C	2.6	0.7	13.614 h
September	26.2°C13.9°C	13.9°C	3.6	0.9	12.512 h
October	20.1°C8.9°C	8.9°C	11	2.7	11.311 h
November	12.3°C2.7°C	2.7°C	21	5.0	10.210 h
December	6.7°C-2.2°C	-2.2°C	18	4.5	9.610 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 Shīrvān

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 Shīrvān) is explained once on the Shīrvān year overview and on the Sources, method and limits page.