yearsofweather

Honolulu in May:
hot,

Honolulu, United States · Records from 2006 to 2025. Not a forecast.

Mean high29°Hottest day 32.9° (2019)
Mean low22°Coldest night 18.2° (2006)
Rain days3 days0-9 by year
Rainfall26mmDaylight 12.9 → 13.4 h
Honolulu's 12 months iBest: December to February
Trip types Beach Finecool seaSightseeing on foot Finemostly dry
Humidity72%10 muggy days
Clear days7 days3 overcast days
Mean wind16 km/hRarely windy
Sea temperature25.4°25-25.7° by year (last 6)
Sunrise / sunset (15th)05:53 / 19:02Daylight 12.9 → 13.4 h

Honolulu in May

Trade winds blow almost daily and the dry season sets in. May 1 is Lei Day, with lei events across the islands and Kapiolani Park as the main stage on Oahu. Memorial Day weekend at month end pushes prices up.

Honolulu in May ran hot: 29°C by day and 22°C at night. By midday the shade was the best seat in town. Rain was rare: 3 rain days on average. 1 of 20 years had a completely dry May, while 2014 reached 9 rain days.

Highs passed 30°C on 9 days on average.

Hurricanes i No tropical storm passed within 300 km in this month over the last 20 years. Hurricanes: July to October

Date by date i

‹ April May 2027 June ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1rain on 15% of days29° 22°
2-8rain on 13% of days29° 22°
9-15rain on 10% of days29° 22°
16-22rain on 14% of days30° 22°
23-29rain on 9% of days30° 22°
30-31rain on 3% of days30° 23°

0-5/206-8/209-11/2012-20/20

May 1rain on 15% of days29° 22°
2-8rain on 13% of days29° 22°
9-15rain on 10% of days29° 22°
16-22rain on 14% of days30° 22°
23-29rain on 9% of days30° 22°
30-31rain on 3% of days30° 23°
Tap another date to change

2006none
2007none
2008none
2009none
2010none
20114mm
2012none
2013none
20148mm
2015none
2016none
2017none
201828mm
20193mm
2020none
2021none
20226mm
2023none
2024none
2025none
Holidays in May (2027)
  • May 31 Memorial Day

1 Local public holiday or break (busier, pricier)

Your trip dates, the past 20 years

Trip dates ~

You can also click two dates on the axis. Hover a cell to see that day's rain.
Trip rain days Month rain days
2006
0 d 1 d
2007
0 d 0 d
2008
0 d 3 d
2009
0 d 2 d
2010
0 d 2 d
2011
5 d 7 d
2012
2 d 2 d
2013
2 d 4 d
2014
1 d 9 d
2015
0 d 1 d
2016
1 d 5 d
2017
1 d 2 d
2018
1 d 3 d
2019
4 d 4 d
2020
0 d 1 d
2021
0 d 1 d
2022
1 d 3 d
2023
0 d 3 d
2024
0 d 9 d
2025
0 d 5 d
Years with rain
Tap a date to start, tap another to end. Each cell is that date in one year.
'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
of 20
3
5
3
4
1
1
2
2
1
2
4
2
0
3
2
1
3
3
4
3
3
2
1
2
1
2
3
2
1
1
0
Rain days on trip
00000522101114001000

No rain1-9 mm10 mm or more Dates outside your trip are dimmed.

One row per year, one cell per day. 2007 had 0 rain days, 2014 had 9.

Honolulu through the year

MonthHighLowRain daysRainfallSea
JanuaryGood 27°19°5 days35mm 25°
FebruaryGood 27°20°6 days49mm 25°
March 28°20°7 days61mm 25°
April 29°21°6 days36mm 25°
May 29°22°3 days26mm 25°
June 31°23°2 days16mm 26°
July 31°24°3 days15mm 26°
August 32°24°3 days28mm 27°
September 31°24°3 days19mm 27°
October 31°23°5 days36mm 27°
November 29°22°5 days44mm 27°
DecemberGood 28°21°6 days71mm 26°

Common questions

Does it rain a lot in Honolulu in May?

Over the past 20 years May averaged 3 rain days (1 mm or more) out of 31. Individual years ran from 0 in the driest to 9 in the wettest.

What should I wear in Honolulu in May?

Days averaged 29°C and nights 22°C. Pack T-shirts, sunscreen plus a hat, and a swimsuit.

Can you swim in Honolulu in May?

Sea surface temperature averaged 25.4°C in May, comfortable for swimming. Year to year it ranged 25-25.7°C. Check local flags for waves and jellyfish on the day.

Is May a good time to visit Honolulu?

On warmth and rain days alone, Honolulu's easiest months were December to February. May ranked 4 of 12.

Is Honolulu humid in May?

Mean relative humidity was 72%, with about 10 muggy days (dew point of 20°C or more) in the month.