Apia Temperature by Month

Apia in Upolu, Samoa enjoys a stable climate, with daytime temperatures staying close to 29°C (84°F) throughout the year. Explore the full monthly breakdown below.

With minimal seasonal shifts, Apia experiences a constant climate year-round. Maximum daytime temperatures range from a comfortable 29°C (84°F) in March to a comfortable 28°C (82°F) in July. At night, temperatures range from 26°C (79°F) in March to 25°C (77°F) in July.

The chart below illustrates the average maximum day and minimum night temperatures in Apia by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. March, the city's warmest month, sees 175 hours of sunshine.

The chart below shows the average temperature throughout the year:

Apia's average annual maximum temperature is 29°C (84°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Apia, July is the coolest month, with average highs of 28°C (82°F) and humidity around 75%, considered high. In March, the warmest month, temperatures average 29°C (84°F) with 78% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Apia this rarely lasts long on the ground.

For more on Apia's weather, including monthly rainfall, sunshine hours, and humidity, visit our Apia climate page.