Port-aux-Français climate

Name: Port-aux-Français
Address: TF

Port-aux-Français is warmest in February, with average highs of 11 °C, and coldest in August, when nights average -1.0 °C. July is the wettest month (95 mm) and February the driest (61 mm). Figures are 1991–2020 climate normals.

Across a full year Port-aux-Français averages 935 mm of rain and 114 days below freezing.

French Southern Territories · population 45 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month February 11 °C
Coldest month August -1.0 °C
Driest month February 61 mm
Wettest month July 95 mm
Least cloud September 71 % cloud
Hottest on record February 21 °C
Coldest on record June -14 °C
Warmest sea March 6.5 °C

What to expectPort-aux-Français through the year

Port-aux-Français has a clear annual cycle: average daily highs run from 3.9 °C in August to 11 °C in February, a swing of 6.0 °C in mean temperature across the year.

Counted across a normal year, 114 nights drop below freezing. The warmest reading in the 1991–2020 record is 21 °C, in February.

Rain is spread fairly evenly through the year, from 61 mm in February to 95 mm in July. There is no dry season to aim for.

The sea off Port-aux-Français is warmest in March at 6.5 °C and coldest in September at 2.8 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	10.4 °C	70 mm	77 %
February	10.7 °C	61 mm	77 %
March	9.7 °C	73 mm	76 %
April	8.0 °C	79 mm	75 %
May	5.7 °C	84 mm	72 %
June	4.4 °C	80 mm	72 %
July	3.9 °C	95 mm	71 %
August	3.9 °C	83 mm	72 %
September	4.5 °C	82 mm	71 %
October	5.7 °C	73 mm	75 %
November	7.4 °C	76 mm	75 %
December	9.3 °C	80 mm	77 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days below 0 °C
January	10.4 °C	3.7 °C	7.3 °C	20.6 °C	-0.8 °C	0
February	10.7 °C	4.2 °C	7.6 °C	21.3 °C	-0.8 °C	0
March	9.7 °C	3.6 °C	6.8 °C	17.3 °C	-2.5 °C	1
April	8.0 °C	2.6 °C	5.3 °C	15.1 °C	-2.7 °C	3
May	5.7 °C	0.9 °C	3.3 °C	11.8 °C	-7.6 °C	10
June	4.4 °C	-0.1 °C	2.1 °C	10.5 °C	-13.8 °C	16
July	3.9 °C	-0.9 °C	1.6 °C	10.0 °C	-13.5 °C	21
August	3.9 °C	-1.0 °C	1.6 °C	10.0 °C	-11.1 °C	20
September	4.5 °C	-0.9 °C	1.9 °C	10.8 °C	-12.1 °C	20
October	5.7 °C	-0.0 °C	3.1 °C	13.4 °C	-9.6 °C	17
November	7.4 °C	1.2 °C	4.5 °C	14.9 °C	-4.2 °C	7
December	9.3 °C	2.8 °C	6.2 °C	17.9 °C	-1.8 °C	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	70 mm	13	16 h/day	77 %	76 %	36 km/h	5.9 °C
February	61 mm	12	14 h/day	77 %	77 %	35 km/h	6.4 °C
March	73 mm	13	12 h/day	76 %	79 %	36 km/h	6.5 °C
April	79 mm	14	11 h/day	75 %	81 %	35 km/h	6.1 °C
May	84 mm	15	9.1 h/day	72 %	81 %	36 km/h	5.2 °C
June	80 mm	14	8.2 h/day	72 %	82 %	35 km/h	4.3 °C
July	95 mm	16	8.6 h/day	71 %	81 %	37 km/h	3.4 °C
August	83 mm	14	9.9 h/day	72 %	80 %	38 km/h	2.9 °C
September	82 mm	14	12 h/day	71 %	78 %	39 km/h	2.8 °C
October	73 mm	14	14 h/day	75 %	77 %	38 km/h	3.1 °C
November	76 mm	15	15 h/day	75 %	76 %	37 km/h	3.9 °C
December	80 mm	16	16 h/day	77 %	76 %	36 km/h	5.0 °C

Where Port-aux-Français ranks

Ranking	Position	Value
The coolest places in the world in August	2nd of 50	3.9 °C
The coolest places in the world in July	2nd of 50	3.9 °C
The coolest places in the world in June	3rd of 50	4.4 °C
The coolest places in the world in September	3rd of 50	4.5 °C
The coolest places in the world in May	5th of 50	5.7 °C
The coolest places in the world in October	25th of 50	5.7 °C

Planning a trip? See the best time to visit Port-aux-Français.

QuestionsCommon questions about Port-aux-Français’s climate

When is the best time to visit Port-aux-Français?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, March sit closest to 20 °C on average, February is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Port-aux-Français get?

In February, the warmest month, daily highs average 11 °C. The highest value in the 1991–2020 record is 21 °C.

How cold does it get in winter?

Nights average -1.0 °C in August, the coldest month. A normal year has 114 nights below freezing.

Which month is wettest in Port-aux-Français?

July, averaging 95 mm over 16 days with rain. The driest month is February with 61 mm. The year as a whole averages 935 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Port-aux-Français rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -49.349°, 70.219° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. 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.