Monthly Climate
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Best time to visit Tainan

December is the best time to visit Tainan for general sightseeing, with average highs of 23 °C and about 6 wet days. The comfortable season runs roughly November to March.

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 December comfort 91/100
A beach holiday November sea 26 °C
The least cloud January 47 % average cloud cover
The least rain November 40 mm
Warmth July 30 °C
Cooler weather January 21 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 December 91 23 °C 6 83
2 February 91 22 °C 7 79
3 January 91 21 °C 7 76
4 March 85 25 °C 9 84
5 November 84 26 °C 5 94
6 October 73 28 °C 7 90
7 April 72 27 °C 11 84
8 September 56 29 °C 14 71
9 May 54 29 °C 18 72
10 June 46 30 °C 20 68
11 August 45 30 °C 21 66
12 July 44 30 °C 20 65

For a beach holiday

November scores highest, with a sea temperature of 26 °C and air temperatures around 26 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 24 °C 21 °C 47 % 76
February 24 °C 22 °C 51 % 79
March 24 °C 25 °C 53 % 84
April 26 °C 27 °C 58 % 84
May 28 °C 29 °C 70 % 72
June 29 °C 30 °C 79 % 68
July 29 °C 30 °C 73 % 65
August 29 °C 30 °C 74 % 66
September 29 °C 29 °C 63 % 71
October 28 °C 28 °C 52 % 90
November 26 °C 26 °C 52 % 94
December 25 °C 23 °C 51 % 83

When to think twice

July scores lowest with about 20 wet days and highs near 30 °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 21.5 °C 46 mm 47 %
February 22.4 °C 42 mm 51 %
March 24.7 °C 58 mm 53 %
April 27.1 °C 116 mm 58 %
May 28.7 °C 281 mm 70 %
June 29.7 °C 383 mm 79 %
July 30.2 °C 308 mm 73 %
August 29.7 °C 397 mm 74 %
September 29.4 °C 188 mm 63 %
October 28.1 °C 54 mm 52 %
November 26.0 °C 40 mm 52 %
December 22.8 °C 43 mm 51 %

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.