Samoa Weather in May 🌞

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Typical Temperatures in May

Locals will say that Samoa’s “winter” is on its way, mainly due to the humidity not being quite as extreme as in previous months. But to visitors, it will feel far from your typical winter with temperatures reaching average highs of 30°C / 86°F, while the lowest temperatures experienced in May are around 24°C / 75°F, often at night.

Temperatures Across Samoa

• Apia, Upolu – The average maximum temperature is 30°C / 86°F and the minimum average temperature is 24°C / 75°F
• Lalomanu, Upolu – The average maximum temperature is 29°C / 84°F and the minimum average temperature is 24°C / 75°F
• Salelologa, Savai’i – The average maximum temperature is 30°C / 86°F and the minimum average temperature is 24°C / 75°F
• Fagamalo, Savai’i – The average maximum temperature is 30°C / 86°F and the minimum average temperature is 24°C / 75°F.

Sea Temperature in May

Samoa has warm sea temperatures all year round including in May when they are still at their highest. Sea temperatures in May are at an average of 29°C / 84°F.

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Hours of Sun in May

Typical of a winter season, the days start to get shorter in Samoa in May. Nevertheless, “short days” in Samoa might not be considered that short with the average daylight hours still being around 11 hours a day! Sunshine hours are typically around 7 hours a day, which is more than what’s experienced in the previous months.

UV Levels During May

While UV levels drop significantly compared to Samoa’s summer months, the UV levels are still at 9 UV index around midday – that’s very high! Be sure to wear high-factor sunscreen. For advice on sunscreen, take a look at The Best Sunscreens for Samoa + Sun Protection Tips.

Sunrise and Sunset During May

May has daylight hours lasting about 11 hours a day in Samoa.

• Sunrise: 06.36 am at the beginning of May and 6.44 am at the end of May
• Sunset: 6.13 pm at the beginning of May and 6.06 pm at the end of May.

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Rainfall in May

While it’s officially the “dry season” that doesn’t mean that the rain has gone for good. Yes, May does still experience some rainy days, typically 9 days out of the month on average. Heavy showers are usually short-lived, however, not causing too much delay to your travel plans or sunbathing sessions.

Samoa receives an average of 205 mm / 8.1″ of rainfall in the month of May, with around 9 days of the month experiencing rain.

Average Rainfall Across Samoa

• Apia, Upolu – The average rainfall in May is 205 mm / 8.1″
• Lalomanu, Upolu – The average rainfall in May is 198 mm / 7.8″
• Salelologa, Savai’i – The average rainfall in May is 205 mm / 8.1″
• Fagamalo, Savai’i – The average rainfall in May is 205 mm / 8.1″.

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Tropical Storms in May

The South Pacific cyclone season starts in November and ends in April, so it’s highly unlikely that a tropical cyclone will occur in Samoa in May. Nevertheless, it’s always best to be prepared, as small-scale cyclones have historically developed across the South Pacific in May. Check out our tips in our guide, Cyclone Safety in Samoa.

For travellers who find cyclones a major concern, perhaps choose a month with the least risk, such as July or August.

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The Best Places to Visit in Samoa in May

May is a good time to visit either one of the islands of Samoa thanks to the lower tourist numbers, generally better travel deals and idyllic weather. While we list both of the destinations in Samoa in The Best Islands to Visit in Samoa for inspiration, here’s a quick overview:

Upolu – Upolu is the most popular island to visit in Samoa yet a little quieter in May before the high season really kicks in. Take advantage of its well-developed tourism scene, such as resorts, tours and activities. Showers are often short and sweet in May, so shouldn’t put too much of a damper on your travel plans. Find out more about what Upolu is all about in the 50 Best Things to Do on Upolu.

Savai’i – For South Seas tranquillity, opt for Samoa’s less-visited island. Discover historical sites reclaimed by jungles and lava, experience a more traditional slice of life through an array of authentic cultural experiences, and hop from one lava cave to the next. See what Savai’i is all about in the 50 Best Things to Do on Savai’i.

Or better yet, visit them both! Check out our The Best Samoa Itineraries for 2 Week / 14 Days and The Best Samoa Itineraries for 10 Days, which gives you plenty of ideas to make the most of both islands.

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May Packing List for Samoa

Be prepared for Samoa in May by packing these few seasonal essentials:

• Light clothing layer (linen, bamboo or merino preferably so it is super light – we like the sustainable bamboo clothing of Moso Morrow)
• Light long-sleeved tops (to cover from the sun and take the edge off those slightly cooler nights)
• Light pants/trousers (to cover the knees when appropriate – in villages or church services or to protect from mosquitoes when hiking, for example)
• Sunhat
• Sunglasses
• Swimwear
• Rash vest (we like the UV-protecting Sharkskin rashies)
• Closed walking shoes
• Flip-flops/jandals/sandals
• Sarong (lavalava – you can always buy one once you arrive in Samoa at The Best Places to Buy Souvenirs in Samoa)
• Insect repellent
• High-factor sunscreen (that’s reef-safe and water-resistant).

Get more ideas on what to pack with our guide, What to Pack for Samoa: FULL Samoa Packing List.