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Climate - Samoa


Average weather, temperature, rainfall, sunshine

Flag - Samoa

Map - Samoa

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In Samoa (formerly Western Samoa), an 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 rainfall from December to March and a relative minimum from June to September.
The archipelago consists of the two main islands, Savai'i and Upolu, two smaller islands, Manono and Apolima, plus some uninhabited islets.
Temperatures are stable, with little variation between the hottest period (December to April), when highs are about 30 °C (86 °F), and the coolest period (June to September), when they are around 29/30 °C (84/86 °F). Temperatures at night are almost always above 20 °C (68 °F). The south-east trade winds blow steadily throughout the year, making the heat more bearable.
Rainfall occurs in the form of downpours or thunderstorms, which are intense but usually short-lived, except in the period from December to March, when they can sometimes last for several hours.
Rainfall is enhanced by the mountains that are found in the interior of the two main islands, and in particular, the largest island, Savai'i, where Mount Silisili is located, 1,858 meters (6,096 feet) high. Here, the rains even exceed 5 meters (195 inches) per year.

Apia

Climate chart - Apia

In the capital, Apia, at nearly 14 degrees south latitude, the daily average ranges from 26.5 °C (79.5 °F) in August to 27.8 °C (82 °F) in March and April. Here are the average temperatures.
Apia - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January253127.6768781.6
February243127.6768781.6
March253127.8768882
April243127.8768882
May243127.4758881.2
June243127.1758780.8
July233026.7748680
August233026.5748679.7
September233026.7748680.1
October243027758680.6
November243027.4768781.2
December243127.4768781.4
Year2430.527.275.186.981

In Apia, on the north side of Upolu Island, 2,800 millimeters (110 inches) of rain fall per year, with a maximum of 450 mm (17.5 in) in January and a minimum of 80 mm (3.2 in) in July and August. Here is the average precipitation.
Apia - Average precipitation
MonthMillimetersInchesDays
January45017.719
February3801518
March35013.817
April2509.815
May1606.313
June1204.711
July803.18
August803.19
September1305.112
October1706.714
November26010.216
December37014.617
Year2800110.2169

The sun in Samoa shines mainly in the relatively dry period, from June to September. In Apia, there are 2,200 hours of sunshine per year.
Apia - Sunshine hours
MonthAverageTotal
January5150
February5.5160
March5.5175
April6185
May6195
June6.5195
July7215
August7220
September7205
October6.5200
November6180
December5155
Year6.12230

The sea in Samoa is warm enough to swim in all year round, as we can see in the following table.
Apia - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January2985
February2985
March3085
April3085
May2985
June2983
July2883
August2882
September2882
October2883
November2984
December2985
Year28.983.9

Samoa

Tropical cyclones



The Samoa Islands are exposed to the tropical cyclones of the South Pacific. Cyclones are usually formed from November to mid-May, though they are most likely from late December to early April. Outside of this period, there has been cyclone Keli, in June 1997.

When to go and what to pack in Samoa

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