Monthly Climate
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Best time to visit Joinville

August is the best time to visit Joinville for general sightseeing, with average highs of 22 °C and about 9 wet days. The comfortable season runs roughly May to September. The sea stays above 20 °C from October to June.

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 August comfort 87/100
A beach holiday April sea 25 °C
The least cloud July 62 % average cloud cover
The least rain August 89 mm
Warmth February 28 °C
Cooler weather July 21 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 August 87 22 °C 9 54
2 June 86 21 °C 10 58
3 July 85 21 °C 10 50
4 May 84 23 °C 12 67
5 September 81 22 °C 14 50
6 October 75 24 °C 17 60
7 April 75 26 °C 14 76
8 November 71 25 °C 18 70
9 December 59 28 °C 20 75
10 March 59 27 °C 22 75
11 January 56 28 °C 24 74
12 February 55 28 °C 22 74

For a beach holiday

April scores highest, with a sea temperature of 25 °C and air temperatures around 26 °C. The sea is above 20 °C from October to June.

Month Sea Air Sunshine Beach score
January 27 °C 28 °C 77 % 74
February 27 °C 28 °C 75 % 74
March 26 °C 27 °C 71 % 75
April 25 °C 26 °C 64 % 76
May 22 °C 23 °C 62 % 67
June 20 °C 21 °C 63 % 58
July 19 °C 21 °C 62 % 50
August 18 °C 22 °C 64 % 54
September 20 °C 22 °C 76 % 50
October 21 °C 24 °C 82 % 60
November 23 °C 25 °C 77 % 70
December 25 °C 28 °C 76 % 75

When to think twice

February scores lowest with about 22 wet days and highs near 28 °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 28.2 °C 273 mm 77 %
February 28.2 °C 259 mm 75 %
March 27.2 °C 200 mm 71 %
April 25.6 °C 115 mm 64 %
May 22.8 °C 110 mm 62 %
June 21.3 °C 111 mm 63 %
July 20.6 °C 91 mm 62 %
August 21.5 °C 89 mm 64 %
September 22.3 °C 147 mm 76 %
October 23.9 °C 152 mm 82 %
November 25.4 °C 164 mm 77 %
December 27.5 °C 186 mm 76 %

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.