Apia climate

Name: Apia
Address: WS

Apia is warmest in March, with average highs of 30 °C, and coldest in August, when nights average 25 °C. January is the wettest month (377 mm) and August the driest (120 mm). Figures are 1991–2020 climate normals.

Across a full year Apia averages 2,830 mm of rain and 365 days above 25 °C.

Samoa · population 40,407 · 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 March 30 °C
Coldest month August 25 °C
Driest month August 120 mm
Wettest month January 377 mm
Least cloud August 51 % cloud
Hottest on record February 38 °C
Coldest on record August 21 °C
Warmest sea March 29 °C

What to expectApia through the year

Apia changes little through the year. Average daily highs stay between 29 and 30 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 365 days a year reach 25 °C, 75 of them reach 30 °C. The warmest reading in the 1991–2020 record is 38 °C, in February.

Rain is strongly seasonal. January averages 377 mm against 120 mm in August — 3.1 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Apia is warmest in March at 29 °C and coldest in August at 28 °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	29.6 °C	377 mm	81 %
February	29.7 °C	345 mm	80 %
March	29.8 °C	271 mm	75 %
April	29.7 °C	220 mm	67 %
May	29.2 °C	206 mm	61 %
June	28.7 °C	145 mm	57 %
July	28.4 °C	133 mm	52 %
August	28.6 °C	120 mm	51 %
September	29.0 °C	162 mm	53 %
October	29.2 °C	220 mm	64 %
November	29.5 °C	279 mm	73 %
December	29.6 °C	352 mm	78 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.6 °C	25.5 °C	27.1 °C	31.8 °C	23.1 °C	31	11
February	29.7 °C	25.4 °C	27.2 °C	37.8 °C	22.1 °C	28	11
March	29.8 °C	25.5 °C	27.3 °C	34.4 °C	23.3 °C	31	13
April	29.7 °C	25.6 °C	27.3 °C	31.8 °C	23.1 °C	30	10
May	29.2 °C	25.5 °C	27.0 °C	31.2 °C	22.8 °C	31	4
June	28.7 °C	25.3 °C	26.7 °C	30.3 °C	22.8 °C	30	1
July	28.4 °C	25.0 °C	26.4 °C	30.4 °C	20.9 °C	31	0
August	28.6 °C	24.8 °C	26.4 °C	31.0 °C	20.6 °C	31	1
September	29.0 °C	25.0 °C	26.6 °C	31.1 °C	22.6 °C	30	2
October	29.2 °C	25.1 °C	26.8 °C	31.7 °C	23.0 °C	31	5
November	29.5 °C	25.3 °C	27.0 °C	31.6 °C	23.4 °C	30	8
December	29.6 °C	25.4 °C	27.1 °C	31.7 °C	23.2 °C	31	10

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	377 mm	28	13 h/day	81 %	88 %	20 km/h	29.1 °C
February	345 mm	25	13 h/day	80 %	88 %	20 km/h	29.1 °C
March	271 mm	28	12 h/day	75 %	87 %	18 km/h	29.3 °C
April	220 mm	25	12 h/day	67 %	87 %	18 km/h	29.3 °C
May	206 mm	24	11 h/day	61 %	85 %	20 km/h	29.0 °C
June	145 mm	22	11 h/day	57 %	84 %	24 km/h	28.5 °C
July	133 mm	20	11 h/day	52 %	83 %	24 km/h	28.1 °C
August	120 mm	21	12 h/day	51 %	82 %	24 km/h	27.8 °C
September	162 mm	22	12 h/day	53 %	83 %	24 km/h	27.9 °C
October	220 mm	25	12 h/day	64 %	84 %	22 km/h	28.3 °C
November	279 mm	26	13 h/day	73 %	86 %	20 km/h	28.8 °C
December	352 mm	27	13 h/day	78 %	87 %	20 km/h	29.0 °C

Where Apia ranks

Ranking	Position	Value
Warmest sea temperatures in the world in February	24thof 50	29 °C
Warmest sea temperatures in the world in January	25thof 50	29 °C
Warmest sea temperatures in the world in March	40thof 50	29 °C

Planning a trip? See the best time to visit Apia.

QuestionsCommon questions about Apia’s climate

When is the best time to visit Apia?

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

How hot does Apia get?

In March, the warmest month, daily highs average 30 °C. About 75 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.

How cold does it get in winter?

Nights average 25 °C in August, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Apia?

January, averaging 377 mm over 28 days with rain. The driest month is August with 120 mm. The year as a whole averages 2,830 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 Apia 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
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.