Weather in Aruba in May

How May compares

May is the 6th warmest month of the year in Aruba and ranks 31st of 134 destinations we compare for May - see where else is hot in May. Against London's average high of 16.6°C in May, Aruba is 11.8°C warmer by day and 17.9°C warmer at night.

Daytime and night-time in May

The typical May day in Aruba peaks at 28.4°C, but that is an average: the warmest 10% of days reach 29.9°C or more. About 100% of days top 25°C and 1 in 11 pass 30°C. Nights average 26.2°C; one night in ten drops to 25.5°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest May day here reached 31.3°C (2020-05-27) and the coldest night 24.0°C (2014-05-10).

Rain in May

Some rain (4-8 rainy days): about 5 days with 1 mm or more, 28 mm in total. Year to year it varies a lot - the wettest May was 1993 with 119 mm, the driest 1997 with 2 mm. Humidity averages 81%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in May

The sea averages 26.9°C - warm enough to swim (22°c+). Depending on the year it ranges from 26.1°C to 27.6°C. For the warmest sea here, come in September (28.5°C).

Sunshine and daylight

Around 3.7 hours of sunshine a day (estimated from cloud cover), 12.6 hours of daylight: the sun rises about 06:15 and sets about 18:58 local time in mid-May. Average cloud cover is 71%.

Is May a good time to visit Aruba?

Yes - it is one of the better months: hot days, manageable rain. The best months for Aruba on our scoring are February, March, June; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Expect steady heat rather than cool evenings

May's heat is consistent: days reach 25°C throughout the month, while only 9% reach 30°C. That makes it a sensible choice if you want warm days without temperatures regularly climbing much higher. The catch is humidity at 81%, which can make the warmth feel more demanding, particularly when you are active. Keep midday plans gentle, choose loose, lightweight clothing and check that your accommodation has air conditioning. With average night lows of 26.2°C, dinner outdoors still calls for light clothes rather than a jumper. The sea averages 26.9°C, so swimming should feel comfortably warm rather than bracing, though it will not provide a sharply cooling contrast.

Low rainfall does not mean clear skies all day

Rain is a manageable drawback rather than the main reason to rule May out. There are about 5 rainy days, so leave some flexibility for wet weather rather than assuming every day will stay dry. The more important catch for sunseekers is sunshine: May averages about 3.7 hours a day within 12.6 hours of daylight. You have plenty of daylight for outdoor plans, but should not expect clear skies from morning to evening. Pack sun protection alongside a light rain layer, and avoid making every plan depend on uninterrupted sunshine. May suits travellers who value warmth and swimming more than guaranteed bright skies.