Monthly Climate
Menu

Best time to visit Thessaloníki

October is the best time to visit Thessaloníki for general sightseeing, with average highs of 21 °C and about 7 wet days. The comfortable season runs roughly April to May. The sea stays above 20 °C from June to October.

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 93/100
A beach holiday September sea 25 °C
The least cloud July 20 % average cloud cover
The least rain August 40 mm
Warmth July 32 °C
Cooler weather January 9.3 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 93 21 °C 7 68
2 May 90 24 °C 9 65
3 September 87 27 °C 6 92
4 April 85 19 °C 9 33
5 June 78 29 °C 7 87
6 November 72 15 °C 7 35
7 July 70 32 °C 6 85
8 August 70 32 °C 6 85
9 March 67 15 °C 9 16
10 February 53 11 °C 8 14
11 December 50 10 °C 8 19
12 January 46 9.3 °C 7 16

For a beach holiday

September scores highest, with a sea temperature of 25 °C and air temperatures around 27 °C. The sea is above 20 °C from June to October.

Month Sea Air Sunshine Beach score
January 14 °C 9.3 °C 54 % 16
February 13 °C 11 °C 55 % 14
March 13 °C 15 °C 53 % 16
April 15 °C 19 °C 50 % 33
May 19 °C 24 °C 45 % 65
June 23 °C 29 °C 31 % 87
July 26 °C 32 °C 20 % 85
August 27 °C 32 °C 20 % 85
September 25 °C 27 °C 34 % 92
October 21 °C 21 °C 50 % 68
November 18 °C 15 °C 59 % 35
December 15 °C 10 °C 58 % 19

When to think twice

January scores lowest with about 7 wet days and highs near 9.3 °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 9.3 °C 50 mm 54 %
February 11.2 °C 48 mm 55 %
March 14.7 °C 61 mm 53 %
April 19.0 °C 57 mm 50 %
May 24.3 °C 66 mm 45 %
June 29.2 °C 46 mm 31 %
July 31.8 °C 41 mm 20 %
August 31.7 °C 40 mm 20 %
September 26.7 °C 49 mm 34 %
October 21.0 °C 59 mm 50 %
November 15.2 °C 58 mm 59 %
December 10.2 °C 70 mm 58 %

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.