Climate averages 1991–2020

Tatvan weather
in October.

A mild, moderately wet month: the 6th warmest and the 5th driest of the year.

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

Average high 16.8°C Daytime mean, October
Average low 9.1°C Night-time mean, October
Rainfall 57 mm 8 days with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Tatvan · average highYear overview

October is a mild month in Tatvan: daytime highs average 16.8°C and nights cool to about 9.1°C. By daytime temperature it is the 6th warmest of the 12 months.

Expect about 57 mm of rain on roughly 8 days, which makes October a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 14 min on an average October day.

The nearest other city in this atlas is Siirt (69 km away). In October its highs average 22.2°C, 5.4°C warmer than Tatvan, with 46 mm of rain.

Among the 138 cities listed in Turkey, Tatvan ranks 132nd of 138 for the warmest October highs and joint 76th of 138 for the driest October (rainfall, lowest first). The mean October high of those 138 cities is 21.4°C; Tatvan is 4.6°C cooler than that mean.

From October to November, average highs fall by 8.2°C to 8.6°C, and monthly rainfall rises from 57 mm to 73 mm.

The annual picture

October 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 29.0°C18.0°C18.0°C4.51.213.714 h
September 24.0°C14.4°C14.4°C142.612.512 h
October, selected 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

October 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.