Monthly Climate
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Best time to visit Arlington

October is the best time to visit Arlington for general sightseeing, with average highs of 26 °C and about 7 wet days. The comfortable season runs roughly March to April.

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 88/100
The least cloud September 37 % average cloud cover
The least rain July 42 mm
Warmth August 35 °C
Cooler weather January 14 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 October 88 26 °C 7
2 April 86 25 °C 8
3 November 86 19 °C 7
4 March 84 21 °C 9
5 May 73 28 °C 10
6 February 72 16 °C 7
7 September 72 31 °C 6
8 December 67 15 °C 7
9 January 63 14 °C 7
10 June 61 32 °C 8
11 August 58 35 °C 5
12 July 56 35 °C 6

When to think twice

July scores lowest with about 6 wet days and highs near 35 °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 14.0 °C 70 mm 49 %
February 16.4 °C 70 mm 53 %
March 20.5 °C 95 mm 52 %
April 24.8 °C 101 mm 49 %
May 28.4 °C 128 mm 53 %
June 32.1 °C 85 mm 44 %
July 34.7 °C 42 mm 39 %
August 34.7 °C 54 mm 38 %
September 31.0 °C 71 mm 37 %
October 25.6 °C 101 mm 39 %
November 19.2 °C 86 mm 45 %
December 14.6 °C 85 mm 49 %

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.