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Climate - Samoa

Temperature, rainfall, prevailing weather conditions, when to go, what to pack

See also the US version (°F - inches - feet)

Flag - Samoa

At Samoa (formerly Western Samoa), archipelago in the Pacific Ocean located south of the Equator, the climate is tropical, that is hot, humid and rainy throughout the year with a maximum in the rainfall amount from December to March, and a relative minimum from June to September.
The temperatures are stable and vary little between the hottest period (December to April), when highs are about 30 °C, and the coolest period (June to September) when they are around 29 °C. The temperatures at night are almost always above 20 °C. The trade winds blow steadily throughout the year, making the heat more bearable.
Here are the average temperatures of Apia.
Apia average temperatures
Apia G F M A M G L A S O N D
Min (°C) 24 24 24 24 24 24 23 23 23 24 24 24
Max (°C) 30 30 30 30 30 29 29 29 29 30 30 30

The rains fall in the form of downpour or thunderstorm, intense but usually not long-lasting, except during the period from December to March, when they can sometimes last for several hours.
Rainfall is enhanced by the mountains that are found in inland areas of the two main islands, and in particular the largest island, Savai'i, where Mount Silisili, 1,858 metres high, is located. Here the rains exceed even 5 metres per year.
In the capital Apia, in Upolu island, 2,800 millimetres of rain per year fall, with a maximum of 450 mm in January, and a minimum of 80 mm in July and August. Here is the average precipitation.
Average precipitation Apia
Apia J F M A M J J A S O N D Year
Prec. (mm) 450 380 350 250 160 120 80 80 130 170 260 370 2800
Days 19 18 17 15 13 11 8 9 12 14 16 17 169

The Samoa Islands are exposed to tropical cyclones, which develop in the South Pacific from November to mid-May, although they are more likely from December to March.


For swimming, the sea is warm all year round, as we can see in the following table.
Sea temperature Apia
Apia G F M A M G L A S O N D
Sea (°C) 29 29 29 29 29 28 28 28 28 28 29 29

When to go

The best time to travel to Samoa goes from June to September, being the least warm and rainy; however, even in this period some downpour or thunderstorm must be put into account.

What to pack

All year round, tropics-friendly, loose fitting clothing, sun hat, a scarf for the breeze, a light sweatshirt for the evening, a light raincoat or umbrella. For the mountains, hiking boots, fleece, raincoat.

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Near countries:
American Samoa
New Zealand
Wallis And Futuna

Us version (°F, feet) French version Italian version
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