Honolulu, often thought of as a year-round tropical paradise, offers warm temperatures and stunning landscapes in March. But before you head to the beach or book that long-awaited vacation, it’s important to know what to expect from the weather this month. While most days will bring plenty of sunshine, occasional rain showers and trade winds could impact outdoor plans. Whether you’re a local resident or a visitor, being aware of the temperature trends, rainfall expectations, and ocean conditions can help you make the most of your time in Hawaii’s capital city. Here’s an in-depth look at what March 2025 has in store for Honolulu.
How Warm Will It Be?
March in Honolulu is pleasantly warm, with daytime temperatures averaging around 79°F (26°C) and cooling down to about 64°F (18°C) at night. The humidity remains moderate, thanks to the gentle trade winds that bring a refreshing ocean breeze. For those who enjoy outdoor activities like hiking, beach trips, or sightseeing, this is the perfect time of year—not too hot, not too cold, and with a comfortable ocean breeze keeping the air fresh.
Will It Rain?
While March is not the wettest month in Honolulu, it does bring occasional showers, especially in the evenings. Expect about 10 days of rain throughout the month, totaling around 2 inches (51 mm) of precipitation. The good news? Most showers are brief and quickly followed by sunshine, so they rarely ruin an entire day’s plans. That being said, if you’re heading to higher elevations—such as Manoa Falls or Tantalus Lookout—be prepared for heavier rainfall and muddier trails. Bringing a light rain jacket or small umbrella is always a good idea.
How Much Sun Can You Expect?
March is still a great time to enjoy the sun, with about 8 hours of bright sunshine each day. This means plenty of time to hit the beach, explore scenic spots, and soak up Honolulu’s natural beauty. The sun sets around 6:30 PM, offering breathtaking evening views along Waikiki Beach and Diamond Head Lookout.
How Warm is the Ocean?
For those who love swimming, snorkeling, or surfing, the water in March is perfectly warm at around 75°F (24°C). Whether you’re looking to catch waves on the North Shore or enjoy calm waters in Waikiki, the ocean temperatures are ideal for water-based activities.
How to Prepare for March Weather in Honolulu
- Wear Light Clothing: Stick to shorts, T-shirts, sundresses, and sandals for the warm days, but bring a light sweater for cooler evenings.
- Pack for Rain: A compact umbrella or rain jacket will come in handy for short, unexpected showers.
- Stay Sun-Safe: Even in March, the UV index is high, so wear sunscreen, sunglasses, and a hat to avoid sunburn.
- Check Surf Reports: If you’re planning to surf, North Shore waves can still be powerful in March, while Waikiki remains beginner-friendly.
Final Thoughts
March in Honolulu offers the best of both worlds—plenty of sunshine for beach days and just enough rain to keep the landscapes lush and beautiful. While occasional showers are possible, they rarely last long, and with mild temperatures and warm ocean waters, it’s still a fantastic time to visit. Whether you’re a local planning your next adventure or a traveler preparing for an unforgettable trip, knowing what to expect from Honolulu’s March weather will ensure you make the most of your time in paradise!