Climate averages 1991–2020

Tatvan weather
in August.

A hot, very dry month: the warmest and the driest of the year. Meets the pleasant-weather rule

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

Average high 29.0°C Daytime mean, August
Average low 18.0°C Night-time mean, August
Rainfall 4.5 mm 1 day with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Tatvan · average highYear overview

August is a hot month in Tatvan: daytime highs average 29.0°C and nights cool to about 18.0°C. By daytime temperature it is the warmest month of the year.

Expect about 4.5 mm of rain on roughly 1 day, which makes August a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 40 min on an average August day.

The nearest other city in this atlas is Siirt (69 km away). In August its highs average 34.7°C, 5.8°C warmer than Tatvan, with almost no rain (under 1 mm).

Among the 138 cities listed in Turkey, Tatvan ranks 95th of 138 for the warmest August highs and joint 47th of 138 for the driest August (rainfall, lowest first). The mean August high of those 138 cities is 31.1°C; Tatvan is 2.1°C cooler than that mean.

From August to September, average highs fall by 5.0°C to 24.0°C, and monthly rainfall rises from 4.5 mm to 14 mm.

The annual picture

August 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. -10-505101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly precipitation

Average total · mm
Average monthly precipitation totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1500

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

Every month, side by side

Tatvan climate table

1991–2020
Monthly climate averages for Tatvan, 1991–2020
MonthAverage highHigh / lowAverage lowPrecipitation mm/monthWet days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 0.2°C-4.8°C-4.8°C9611.79.810 h
February 1.1°C-4.2°C-4.2°C10311.210.711 h
March 5.1°C-0.9°C-0.9°C12214.311.912 h
April 10.6°C3.3°C3.3°C11815.813.213 h
May 17.3°C8.5°C8.5°C8415.014.214 h
June 23.8°C13.5°C13.5°C235.314.815 h
July 28.7°C17.2°C17.2°C8.02.314.615 h
August, selected 29.0°C18.0°C18.0°C4.51.213.714 h
September 24.0°C14.4°C14.4°C142.612.512 h
October 16.8°C9.1°C9.1°C578.111.211 h
November 8.6°C2.4°C2.4°C738.810.110 h
December 2.6°C-2.5°C-2.5°C9510.79.510 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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

Distance from Tatvan

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