What is the Weather Like in American Samoa in March?
March sits firmly in American Samoa's long summer, or "wet season", and is one of the hottest and most humid months of the year. Rainfall remains frequent, and while the risk of cyclones still exists, it tends to be slightly lower than in January or February.
Despite the tropical downpours, you can still expect plenty of sunny intervals throughout the day.
With tourism still in its low season, March is a rewarding time to visit for travellers who don't mind a bit of rain in exchange for fewer crowds and lush, vibrant landscapes.
For a breakdown of typical temperatures, rainfall, sunshine hours and more, continue reading this guide to American Samoa weather in March.
Before we jump into this weather guide for March, be sure to bookmark American Samoa Weather, Seasons & Climate + American Samoa Weather by Month LINK#TT058, as well as The Best Time to Visit American Samoa: A Month-by-Month Guide LINK#TT019 for more advice.
Table of Contents
5 Tips for Visiting American Samoa in March
- March falls in the tourist low season, so look out for great deals on flights and accommodation
- Wear high-factor sunscreen LINK#TT024 to protect yourself from the high UV levels experienced in American Samoa during March
- Because it’s the wet season, there are a few more mosquitoes. Make sure you pack insect repellent LINK#TT023.
- Also with the low season in mind, note that some tours have limited availability during March. Nevertheless, all of American Samoa's natural attractions will still be open.
- It is true that American Samoa can get really hot and humid in March. Don’t worry, there are plenty of opportunities to cool off in the water during the day, while most accommodations LINK#A003 are equipped with air conditioning, ceiling fans or the sea breeze in your rooms for pleasant nights.
Typical Temperatures in March
Typical Temperatures in March
March is one of the warmest and most humid months in American Samoa, falling right in the middle of the island's long summer and wet season.
Daily high temperatures typically average around 29°C (84°F), while nighttime lows hover near 26°C (79°F).
Combined with high humidity, the air often feels much hotter than it actually is, expect a true tropical climate during this time of year.
Sea Temperature in March
The ocean around American Samoa remains warm throughout the year, and in March it reaches some of its highest temperatures.
The average sea temperature is around 29°C (84°F), ideal for swimming, snorkelling, or simply cooling off from the midday heat.
Hours of Sun in March
Hours of Sun in March
In March, daylight hours in American Samoa begin to slightly shorten compared to the earlier months of the year, averaging around 12 to 12.5 hours per day.
Despite the wet season, you can still expect about six hours of bright sunshine daily, offering plenty of time to enjoy the outdoors between tropical showers.
UV Levels During March
UV levels remain extremely high in March, often reaching 11+ on the UV index around midday. It's important to wear reef-safe, high-SPF sunscreen, along with sun-protective clothing, hats, and sunglasses, especially if you're planning to spend extended time outdoors. See The Best Sunscreens for American Samoa + Sun Protection Tips LINK#TT024.
Sunrise and Sunset During March
March has daylight hours lasting about 12 hours a day in American Samoa.
- Sunrise: 6:28 am at the beginning of March and 6:32 am at the end of March
- Sunset: 6:51 pm at the beginning of March and 6:31 pm at the end of March.
Rainfall in March
March is one of the wettest months in American Samoa, with frequent but short-lived tropical downpours that often occur in the afternoon or evening.
These bursts of rain are typically intense, earning the nickname "liquid sunshine" due to their suddenness and the quick return of sunny skies.
On average, American Samoa receives around 338 mm (13.3 in) of rainfall throughout March, with rain falling on about 18 to 20 days during the month.
The rainfall supports the islands' lush landscapes and waterfalls, making this a great time for nature lovers, as long as you don't mind a bit of rain in your plans.
If you need a rainy day backup, check out the ideas in the 10 Things to Do in American Samoa on a Rainy Day LINK#TTD064.
Tropical Storms in March
March remains within the South Pacific cyclone season (November–April), so there's a moderate risk of tropical storms impacting American Samoa. While direct hits are rare, the islands can experience peripheral effects such as heavy rain, strong winds and rough seas.
There have been no major cyclone impacts on American Samoa in recent Marches.
If you want to avoid the risk of cyclones in American Samoa, it’s best to travel in the dry season. For those planning to travel during March, be aware of what to do if there is a cyclone alert by following our guide, Cyclone Safety in American Samoa LINK#TT030.
The Best Places to Visit in American Samoa in March
March is one of the quietest times to visit American Samoa, with fewer tourists and a laid-back island vibe. It's a great opportunity to enjoy the natural beauty, cultural heritage and scenic coastlines without the crowds, especially as many resorts and accommodations operate well below capacity during this off-peak month.
March is a great time to explore Tutuila, the main island of American Samoa. With fewer visitors around, you can enjoy its iconic hiking trails, quiet beaches and lush rainforests in peace.
The island also offers more options for dining, transport and indoor activities during rainy spells compared to the smaller islands. Don't miss the National Park of American Samoa, Two Dollar Beach and the panoramic views from Mount ʻAlava.
That's not to say the Manuʻa Islands—Ofu, Olosega and Taʻū, should be missed. If you have a few extra days and are looking for a more remote, untouched escape, these islands offer stunning coral reefs, traditional villages and unparalleled serenity.
Learn more in The Best Islands to Visit in American Samoa LINK#TT012.
March Packing List for American Samoa
Be prepared for American Samoa in March by packing these few seasonal essentials:
- High-factor reef-safe sunscreen LINK#TT024
- Insect repellent LINK#TT023
- Light bamboo, linen or merino layers (we like the sustainable bamboo clothing of Moso Morrow)
- Light long-sleeved tops (to cover from sun and mosquitoes)
- Light pants/trousers (to cover the knees when appropriate – villages, church service, etc.)
- Sunhat
- Sunglasses
- Swimwear
- Rash vest (we like the UV-protecting Sharkskin rashies)
- Closed walking shoes
- Flip-flops/jandals/sandals
Get more ideas on what to pack with our guide, What to Pack for American Samoa: FULL American Samoa Packing List LINK#TT021.
More About the Weather in American Samoa in March
That's it for our complete guide to the weather and climate in American Samoa in March. Check out the following articles for more weather advice:
- American Samoa Weather, Seasons & Climate + American Samoa Weather by Month LINK#TT058
- The Best Time to Visit American Samoa: A Month-by-Month Guide LINK#TT019
- American Samoa Weather in January LINK#TT050
- American Samoa Weather in February LINK#TT049
- American Samoa Weather in April LINK#TT046
Finally, enjoy a comprehensive guide to planning a trip to Samoa in The Complete Travel Guide to American Samoa LINK#TT038.
