Monthly Climate
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Best time to visit Mersin

October is the best time to visit Mersin for general sightseeing, with average highs of 26 °C and about 4 wet days. The comfortable season runs roughly April to May. The sea stays above 20 °C from May to December.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking October comfort 95/100
A beach holiday June sea 25 °C
The least cloud September 15 % average cloud cover
The least rain July 2 mm
Warmth August 31 °C
Cooler weather January 12 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 95 26 °C 4 96
2 May 94 24 °C 4 86
3 November 93 19 °C 5 70
4 April 92 20 °C 6 57
5 June 82 28 °C 1 100
6 September 80 29 °C 2 95
7 March 77 17 °C 7 38
8 July 69 31 °C 0 93
9 August 67 31 °C 1 88
10 December 66 14 °C 9 35
11 February 64 14 °C 8 26
12 January 57 12 °C 10 27

For a beach holiday

June scores highest, with a sea temperature of 25 °C and air temperatures around 28 °C. The sea is above 20 °C from May to December.

Month Sea Air Sunshine Beach score
January 18 °C 12 °C 52 % 27
February 17 °C 14 °C 49 % 26
March 17 °C 17 °C 43 % 38
April 18 °C 20 °C 41 % 57
May 21 °C 24 °C 33 % 86
June 25 °C 28 °C 21 % 100
July 28 °C 31 °C 17 % 93
August 29 °C 31 °C 17 % 88
September 28 °C 29 °C 15 % 95
October 26 °C 26 °C 28 % 96
November 23 °C 19 °C 38 % 70
December 20 °C 14 °C 51 % 35

When to think twice

January scores lowest with about 10 wet days and highs near 12 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 12.5 °C 101 mm 52 %
February 13.7 °C 65 mm 49 %
March 16.8 °C 51 mm 43 %
April 20.4 °C 30 mm 41 %
May 24.4 °C 23 mm 33 %
June 28.0 °C 6 mm 21 %
July 30.7 °C 2 mm 17 %
August 31.3 °C 3 mm 17 %
September 29.2 °C 11 mm 15 %
October 25.5 °C 32 mm 28 %
November 19.4 °C 70 mm 38 %
December 14.2 °C 129 mm 51 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.