Monthly Climate
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Best time to visit Athens

October is the best time to visit Athens for general sightseeing, with average highs of 23 °C and about 4 wet days. The comfortable season runs roughly April to May. The sea stays above 20 °C from June to November.

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 97/100
A beach holiday September sea 25 °C
The least cloud July 7 % average cloud cover
The least rain August 5 mm
Warmth July 33 °C
Cooler weather January 12 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 97 23 °C 4 86
2 May 96 25 °C 5 76
3 April 93 20 °C 5 47
4 September 86 28 °C 3 100
5 November 84 18 °C 6 53
6 June 79 30 °C 2 92
7 March 75 16 °C 7 26
8 August 69 33 °C 1 89
9 July 68 33 °C 2 88
10 December 64 13 °C 8 27
11 February 62 13 °C 7 18
12 January 58 12 °C 7 21

For a beach holiday

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

Month Sea Air Sunshine Beach score
January 15 °C 12 °C 54 % 21
February 15 °C 13 °C 51 % 18
March 15 °C 16 °C 47 % 26
April 16 °C 20 °C 41 % 47
May 19 °C 25 °C 33 % 76
June 22 °C 30 °C 17 % 92
July 25 °C 33 °C 7 % 88
August 26 °C 33 °C 7 % 89
September 25 °C 28 °C 20 % 100
October 23 °C 23 °C 39 % 86
November 20 °C 18 °C 52 % 53
December 17 °C 13 °C 57 % 27

When to think twice

January scores lowest with about 7 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 11.8 °C 55 mm 54 %
February 12.8 °C 48 mm 51 %
March 15.6 °C 50 mm 47 %
April 19.8 °C 28 mm 41 %
May 25.2 °C 23 mm 33 %
June 30.3 °C 12 mm 17 %
July 32.7 °C 7 mm 7 %
August 32.6 °C 5 mm 7 %
September 28.2 °C 17 mm 20 %
October 23.0 °C 28 mm 39 %
November 17.6 °C 50 mm 52 %
December 13.1 °C 64 mm 57 %

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.