Monthly Climate
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Best time to visit Sumayl

October is the best time to visit Sumayl for general sightseeing, with average highs of 27 °C and about 3 wet days. The comfortable season runs roughly April to May.

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 91/100
The least cloud August 3 % average cloud cover
The least rain August 0 mm
Warmth July 40 °C
Cooler weather January 10 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 October 91 27 °C 3
2 April 90 22 °C 8
3 May 87 28 °C 4
4 November 82 18 °C 6
5 March 68 16 °C 10
6 September 68 34 °C 0
7 June 62 35 °C 0
8 December 53 12 °C 9
9 February 51 12 °C 10
10 August 49 39 °C 0
11 July 48 40 °C 0
12 January 44 10 °C 10

When to think twice

January scores lowest with about 10 wet days and highs near 10 °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 10.0 °C 84 mm 54 %
February 11.8 °C 76 mm 50 %
March 16.2 °C 82 mm 48 %
April 21.8 °C 58 mm 43 %
May 28.4 °C 25 mm 31 %
June 35.5 °C 1 mm 8 %
July 39.6 °C under 1 mm 3 %
August 39.1 °C under 1 mm 3 %
September 34.1 °C 1 mm 5 %
October 27.0 °C 24 mm 27 %
November 17.7 °C 53 mm 41 %
December 11.9 °C 74 mm 53 %

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.