Weather
Fiji is a tropical country with two seasons: wet (rainy) and dry. March is in the wet season, also sometimes called Fiji's summer. Statistically, March is the wettest month of the year. You should expect rain each day, but this might vary between a short, sharp shower and torrential rain all day. Being "summer," March is also hot and humid in Fiji. When it's not raining, the sun can be scorching. Although temperatures are fairly uniform year-round in Fiji, expect high temperatures of up to 86°F (30°C).
As well as "normal" wet weather this month, there's the threat from cyclones, which bring very heavy rains and wind and can be destructive. Luckily, there's usually plenty of warning when a cyclone is on its way. Buy flexible flights and accommodation if possible, and be prepared to change your plans with a few days' notice if you end up in the path of an approaching cyclone.
Crowds & Costs
The rainy season is the low season for travel to Fiji, and March is generally a quiet month. You won't see too many other travelers, so this is a great time to visit if you're on a tight budget or seeking a romantic getaway with beaches (almost) to yourself. March is a good month to look for flight and accommodation bargains.
Where to Go
The west coast of Viti Levu is drier than other parts of the island, so it's a natural choice for a beach vacation in Fiji in March. There are many resorts around the city of Nadi, so you won't be short of options. For an especially upmarket experience, head to Denarau Island (not technically an island), west of Nadi. The enclave has nine five-star hotels built on reclaimed mangrove swamps.
To take a break from the beaches on Viti Levu, head inland to the Koroyanitu National Park, a must for nature lovers. Six villages within the park are involved in eco-tourism. Take a hike to Mount Koroyanitu (3,920 ft/1,195 m) if you're feeling energetic, or a shorter walk to one of the tallest waterfalls in Fiji, Savuione Falls.
What to Do
Cool off from the heat and humidity by visiting the Sawa-I-Lau Caves on Yasawa Island, northwest of Viti Levu. The caves are most easily reached from resorts on Yasawa, which often include day trip options. Inside a mountain are two pools that are fed by seawater. You can swim in them—the water is refreshingly cold.
If you make it to the Yasawa Group, consider staying in a small local homestay for at least a night or two. Learn about everyday life in Fiji's smaller islands and get to know the local people in a way impossible from a regular hotel. Living quarters are usually basic but clean and comfortable, and activities typically include a village tour.
Events in March
Holi, nationwide. Fijians of Indian descent celebrate the major Hindu festival of Holi in early to mid-March (the date varies according to the lunar calendar). This festival traditionally welcomes spring across the South Asian subcontinent. While this doesn't apply to Fiji, the festival of color and water play is still celebrated with gusto in parts of Fiji where Indian communities live.