End of the wetter season · Weather & things to do
Oahu in March
The year's rain peaks now, with about 3.7 in (94 mm) falling in Oahu, alongside highs near 75°F (24°C) and lows of 69°F (21°C).
Its comfort score of 80/100 is still Good, though it ranks 12th of 12 here.
- Avg high
- 75°F (24°C)
- Avg low
- 69°F (21°C)
- Rain
- 3.7 in (94 mm)
- Humidity
- 75%
- Cloud cover
- 58%
- Daylight
- ~11 h 51 min
- Comfort score
- 80/100 · Great
What March feels like
Highs settle around 75°F (24°C), warm enough for short sleeves.
Nights cool to an average low of 69°F (21°C).
Humidity averages 75%, so the air feels sticky and the heat feels stronger than the thermometer says.
Showers are part of the month, adding up to about 3.7 in (94 mm).
It's breezy, with average winds near 12 mph (5.2 m/s) at ground level.
Plan around March
March is one of the lower-scoring months here; the best are January and May – September.
- Comfort slips from 83/100 in February to 80/100.
- Our Hawaii Paradise route recommends Apr – Oct, so March falls outside its suggested window.
What to pack for March
- Light, breathable clothes75°F afternoons
- Sunscreen, sunglasses and a hatstrong sun this month
- Quick-dry fabrics75% average humidity
- Packable rain jacket or umbrellaa shower or two is likely
- Windproof shellaverage wind 12 mph
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Oahu in March
March is good outdoor weather here, so these picks lean toward the open air.
Hanauma Bay Nature Preserve
Protected volcanic bay with reef snorkeling and green sea turtles.
Why now March scores 80/100 for comfort, good conditions for being outside.
Pearl Harbor National Memorial
Boat out to the USS Arizona Memorial and walk the museums on the 1941 attack.
Why now Highs near 75°F and 3.7 in of monthly rain make this an easy outdoor pick.
Matsumoto Shave Ice
Haleiwa shave ice stand open since 1951, a North Shore ritual.
Giovanni's Shrimp Truck
Graffiti-covered Kahuku truck serving garlic shrimp plates with rice.
Waimea Bay Beach Park
Big North Shore bay: glassy summer swimming, huge winter surf to watch.
Why now One to do outside while the weather is on your side.
Nearby in March
- Waikiki in March~15 mi · highs 77°F, 3.7 in rain · 1°C (2°F) warmer by day, about as wet
- Kailua & Lanikai in March~18 mi · highs 75°F, 3.0 in rain · similar daytime temperatures, drier
- Maui in March~116 mi · highs 68°F, 3.3 in rain · 4°C (7°F) cooler by day, about as wet
- Big Island in March~200 mi · highs 51°F, 8.8 in rain · 13°C (24°F) cooler by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Oahu in March: quick answers
Is March a good time to visit Oahu?
It's one of the tougher months here, scoring 80/100, held back mainly by cloud cover. The best months are January and May – September. Expect highs of 75°F (24°C) and 3.7 in (94 mm) of rain. Our Hawaii Paradise route recommends Apr – Oct, so March is outside its suggested window.
How hot is Oahu in March?
Average highs are 75°F (24°C) and average lows 69°F (21°C), making it the 2nd-coldest month by daytime highs.
Does it rain a lot in Oahu in March?
Some: about 3.7 in (94 mm) of rain falls across March on average, the wettest month of the year. The annual total is about 30.4 in (771 mm).
What should I pack for Oahu in March?
Bring light, breathable clothes (75°F afternoons), sunscreen, sunglasses and a hat (strong sun this month), quick-dry fabrics (75% average humidity), packable rain jacket or umbrella (a shower or two is likely) and windproof shell (average wind 12 mph).
Planning Oahu in March?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.