Monthly Climate
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Best time to visit Saipan

March is the best time to visit Saipan for general sightseeing, with average highs of 27 °C and about 10 wet days. The comfortable season runs roughly December 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 March comfort 64/100
A beach holiday March sea 27 °C
The least cloud April 44 % average cloud cover
The least rain March 40 mm
Warmth June 28 °C
Cooler weather February 26 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 March 64 27 °C 10 83
2 February 64 26 °C 11 80
3 April 61 27 °C 11 81
4 January 61 26 °C 13 77
5 May 57 28 °C 14 74
6 December 55 27 °C 14 74
7 September 49 27 °C 27 68
8 June 49 28 °C 19 69
9 August 49 27 °C 28 68
10 July 49 28 °C 27 68
11 November 48 27 °C 19 70
12 October 48 27 °C 25 69

For a beach holiday

March scores highest, with a sea temperature of 27 °C and air temperatures around 27 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 28 °C 26 °C 50 % 77
February 27 °C 26 °C 48 % 80
March 27 °C 27 °C 46 % 83
April 28 °C 27 °C 44 % 81
May 29 °C 28 °C 50 % 74
June 29 °C 28 °C 57 % 69
July 29 °C 28 °C 77 % 68
August 29 °C 27 °C 85 % 68
September 30 °C 27 °C 83 % 68
October 29 °C 27 °C 69 % 69
November 29 °C 27 °C 49 % 70
December 28 °C 27 °C 44 % 74

When to think twice

October scores lowest with about 25 wet days and highs near 27 °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 26.3 °C 64 mm 50 %
February 26.1 °C 44 mm 48 %
March 26.6 °C 40 mm 46 %
April 27.2 °C 56 mm 44 %
May 27.8 °C 70 mm 50 %
June 28.0 °C 106 mm 57 %
July 27.5 °C 220 mm 77 %
August 27.3 °C 324 mm 85 %
September 27.3 °C 291 mm 83 %
October 27.2 °C 297 mm 69 %
November 27.3 °C 133 mm 49 %
December 26.9 °C 69 mm 44 %

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.