Middle of the drier season · Weather & things to do
Oahu in May
Oahu edges warmer than April, with highs of 78°F (26°C), lows of 72°F (22°C) and about 1.9 in (47 mm) of rain.
May opens the best stretch on our comfort score, at 91/100 (3rd of 12).
- Avg high
- 78°F (26°C)
- Avg low
- 72°F (22°C)
- Rain
- 1.9 in (47 mm)
- Humidity
- 74%
- Cloud cover
- 47%
- Daylight
- ~13 h 01 min
- Comfort score
- 91/100 · Great
What May feels like
Days are warm, averaging 78°F (26°C), easy weather for being outside from morning to evening.
Nights stay warm too, with lows averaging 72°F (22°C).
About 1.9 in (47 mm) of rain falls in a typical year's May.
It's breezy, with average winds near 11 mph (5.1 m/s) at ground level.
Plan around May
May is one of Oahu's best months on the climate data.
- Opens the best-scoring stretch on our comfort score: January and May – September.
- Comfort improves from 86/100 in April to 91/100.
- May sits inside the Apr – Oct window our Hawaii Paradise route recommends.
What to pack for May
- Light, breathable clothes78°F afternoons
- Sunscreen, sunglasses and a hatstrong sun this month
- Windproof shellaverage wind 11 mph
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Oahu in May
May is good outdoor weather here, so these picks lean toward the open air.
Mai Tai Bar at the Royal Hawaiian
Beachfront bar at the pink 1927 Royal Hawaiian for a sunset mai tai.
Leonard's Bakery
Honolulu institution since 1952 frying hot, sugar-rolled Portuguese malasadas.
Diamond Head State Monument
Steep 1.6-mile round-trip trail up a volcanic crater rim with views over Waikiki.
Why now May scores 91/100 for comfort, good conditions for being outside.
Giovanni's Shrimp Truck
Graffiti-covered Kahuku truck serving garlic shrimp plates with rice.
Waikiki Beach
Calm, sandy swim and beginner surf with Diamond Head as the backdrop.
Why now Highs near 78°F and 1.9 in of monthly rain make this an easy outdoor pick.
Nearby in May
- Waikiki in May~15 mi · highs 80°F, 1.9 in rain · 1°C (2°F) warmer by day, about as wet
- Kailua & Lanikai in May~18 mi · highs 78°F, 1.3 in rain · similar daytime temperatures, about as wet
- Maui in May~116 mi · highs 70°F, 1.5 in rain · 5°C (8°F) cooler by day, about as wet
- Big Island in May~200 mi · highs 54°F, 5.4 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 May: quick answers
Is May a good time to visit Oahu?
Yes. On the climate data it's one of the best months, scoring 91/100. Expect highs of 78°F (26°C) and 1.9 in (47 mm) of rain. May is inside the Apr – Oct window our Hawaii Paradise route recommends.
How hot is Oahu in May?
Average highs are 78°F (26°C) and average lows 72°F (22°C), making it the 6th-warmest month by daytime highs.
Does it rain a lot in Oahu in May?
Not much: about 1.9 in (47 mm) of rain falls across May on average, the 4th-driest month of the year. The annual total is about 30.4 in (771 mm).
What should I pack for Oahu in May?
Bring light, breathable clothes (78°F afternoons), sunscreen, sunglasses and a hat (strong sun this month), windproof shell (average wind 11 mph) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in May
- Hawaii Paradise Apr – Oct
Planning Oahu in May?
Share this May plan with your group, poll everyone on dates and keep the packing list in one place.