American Samoa, a breathtaking destination known for its lush rainforests, pristine beaches, and rich Polynesian culture, offers visitors a true tropical experience in March. However, before you plan that dream getaway, it’s important to know what kind of weather to expect this time of year. While the island’s warm temperatures and crystal-clear waters remain inviting, March is part of the wet season, meaning frequent rain showers, high humidity, and occasional storms. So, is March the perfect time to explore this Pacific paradise, or will the weather put a damper on your plans? Here’s what you need to know.
How Hot Does It Get?
March in American Samoa brings consistently warm temperatures, with daytime highs averaging around 86°F (30°C) and nighttime lows settling near 75°F (24°C). Thanks to the humid tropical air, it can feel even hotter, making it essential to stay hydrated and seek shade when needed. If you enjoy warm-weather activities like beach outings, hiking, or snorkeling, the morning and late afternoon hours are the most comfortable. Midday temperatures combined with humidity can feel intense, so taking breaks and wearing light, breathable clothing is recommended.
Rainfall: How Wet Will It Get?
March is one of the wetter months in American Samoa, with rain expected on more than half the days of the month. The region typically sees about 12.6 inches (319 mm) of rainfall spread over 18 rainy days. While that may sound like a lot, the showers are usually short-lived and followed by sunshine. However, tropical downpours can sometimes be heavy and last longer, especially in the afternoon or evening. If you’re planning outdoor excursions like visiting the National Park of American Samoa or hiking to Matafao Peak, it’s a good idea to check the forecast, wear waterproof gear, and be mindful of slippery trails.
How Much Sunshine Can You Expect?
Despite the rainy season, the sun still makes frequent appearances. On average, American Samoa experiences 5 hours of bright sunshine per day, which accounts for about 45% of total daylight hours. That means there’s still plenty of time to enjoy the island’s stunning landscapes and beaches between showers.
Ocean Conditions: Is It Safe to Swim?
The good news is that ocean temperatures remain consistently warm at around 84°F (29°C), making it perfect for swimming, diving, and snorkeling. However, heavy rain can lead to rougher seas and murkier water visibility, especially near river outlets where runoff occurs.
If you’re planning water activities, check local surf and tide reports beforehand to ensure safe conditions.
How to Prepare for American Samoa’s March Weather
- Pack Light but Smart – Bring breathable clothes, rain gear, and waterproof footwear to handle both the heat and occasional downpours.
- Stay Hydrated – With high humidity levels, drinking plenty of water is key to avoiding dehydration.
- Plan Around the Rain – Try to schedule outdoor activities in the morning or early afternoon before storms roll in.
- Use Sun Protection – Even on cloudy days, UV rays can be intense, so wearing sunscreen, sunglasses, and a hat is essential.
- Be Flexible – Rain showers can be unpredictable, so having backup indoor activities or alternative plans is always a good idea.
March in American Samoa offers a classic tropical experience, complete with warm temperatures, lush greenery, and frequent rain showers. While the wet season brings unpredictable weather, it also enhances the island’s natural beauty, making waterfalls more powerful and landscapes even more vibrant. For travelers who don’t mind a little rain in exchange for fewer crowds and lower prices, March can still be an incredible time to visit. Just come prepared, stay flexible, and enjoy the beauty of American Samoa—rain or shine!