Climate averages 1991–2020

Zonguldak weather
in May.

A mild, moderately wet month: the 5th warmest and the 2nd driest of the year. Meets the pleasant-weather rule

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

Average high 20.0°C Daytime mean, May
Average low 12.8°C Night-time mean, May
Rainfall 43 mm 7 days with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Zonguldak · average highYear overview

May is a mild month in Zonguldak: daytime highs average 20.0°C and nights cool to about 12.8°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 43 mm of rain on roughly 7 days, which makes May a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 29 min on an average May day.

The nearest other city in this atlas is Ereğli (Zonguldak Province), Turkey (36 km away). In May its highs average 18.7°C, 1.3°C cooler than Zonguldak, with 55 mm of rain.

Among the 138 cities listed in Turkey, Zonguldak ranks joint 107th of 138 for the warmest May highs and joint 54th of 138 for the driest May (rainfall, lowest first). The mean May high of those 138 cities is 22.4°C; Zonguldak is 2.5°C cooler than that mean.

From May to June, average highs rise by 3.9°C to 23.9°C, and monthly rainfall rises from 43 mm to 50 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. 051015202530 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 1500

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

Every month, side by side

Zonguldak climate table

1991–2020
Monthly climate averages for Zonguldak, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 8.7°C2.6°C2.6°C9713.99.510 h
February 9.3°C2.7°C2.7°C7712.710.611 h
March 11.8°C4.8°C4.8°C7712.211.912 h
April 15.7°C8.2°C8.2°C478.813.313 h
May, selected 20.0°C12.8°C12.8°C436.714.514 h
June 23.9°C17.0°C17.0°C506.615.115 h
July 26.4°C19.5°C19.5°C425.514.915 h
August 27.0°C20.2°C20.2°C505.813.814 h
September 23.8°C17.0°C17.0°C828.112.513 h
October 19.7°C13.3°C13.3°C10110.111.111 h
November 15.1°C8.4°C8.4°C9010.59.910 h
December 10.7°C4.7°C4.7°C10713.89.29 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 Zonguldak

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