Climate averages 1991–2020

Bonāb weather
in May.

A warm, fairly dry month: the 5th warmest and the 6th driest of the year. Meets the pleasant-weather rule

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

Average high 23.9°C Daytime mean, May
Average low 10.3°C Night-time mean, May
Rainfall 21 mm 6 days with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Bonāb · average highYear overview

May is a warm month in Bonāb: daytime highs average 23.9°C and nights cool to about 10.3°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 21 mm of rain on roughly 6 days, which makes May a fairly dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 09 min on an average May day.

The nearest other city in this atlas is Marāgheh (East Azerbaijan), Iran (17 km away). In May its highs average 22.4°C, 1.5°C cooler than Bonāb, with 42 mm of rain.

Among the 128 cities listed in Iran, Bonāb ranks 93rd of 128 for the warmest May highs and joint 70th of 128 for the driest May (rainfall, lowest first). The mean May high of those 128 cities is 27.8°C; Bonāb is 3.9°C cooler than that mean.

From May to June, average highs rise by 6.2°C to 30.1°C, and monthly rainfall falls from 21 mm to 3.6 mm.

The annual picture

May 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

Bonāb climate table

1991–2020
Monthly climate averages for Bonāb, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 4.5°C-5.1°C-5.1°C255.99.910 h
February 6.6°C-3.9°C-3.9°C306.510.811 h
March 12.0°C0.0°C0.0°C377.911.912 h
April 18.0°C5.2°C5.2°C377.313.113 h
May, selected 23.9°C10.3°C10.3°C215.914.214 h
June 30.1°C15.7°C15.7°C3.61.114.715 h
July 33.5°C19.9°C19.9°C1.20.414.514 h
August 33.4°C19.7°C19.7°C1.10.413.614 h
September 28.4°C14.4°C14.4°C1.30.312.512 h
October 21.3°C8.6°C8.6°C112.711.311 h
November 12.4°C1.5°C1.5°C285.410.210 h
December 6.6°C-3.0°C-3.0°C276.19.610 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

May in nearby cities

Distance from Bonāb

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