Weather in Grenada in May

How May compares

May is the 2nd warmest month of the year in Grenada and ranks 34th 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, Grenada is 11.6°C warmer by day and 17.6°C warmer at night.

Daytime and night-time in May

The typical May day in Grenada peaks at 28.2°C, but that is an average: the warmest 10% of days reach 29.1°C or more. About 100% of days top 25°C and 1 in 100 pass 30°C. Nights average 25.9°C; one night in ten drops to 25.1°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest May day here reached 30.2°C (2019-05-27) and the coldest night 24.0°C (2018-05-07).

Rain in May

Wet (more than 8 rainy days): about 13 days with 1 mm or more, 58 mm in total. Year to year it varies a lot - the wettest May was 2012 with 173 mm, the driest 2008 with 6 mm. Humidity averages 78%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in May

The sea averages 27.6°C - warm enough to swim (22°c+). Depending on the year it ranges from 27.2°C to 28.0°C. For the warmest sea here, come in September (29.2°C).

Sunshine and daylight

Around 5.1 hours of sunshine a day (estimated from cloud cover), 12.6 hours of daylight: the sun rises about 05:43 and sets about 18:24 local time in mid-May. Average cloud cover is 60%.

Is May a good time to visit Grenada?

It is a reasonable choice: hot days but expect showers. The best months for Grenada on our scoring are March, February, April; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm seas, but little relief from the heat

The warmth is a clear step up from London, where May daytime highs average 16.6°C. Grenada feels hot without regularly reaching 30°C, but humidity of 78% makes the temperature alone an incomplete guide to comfort. Keep strenuous plans away from midday and pack loose, breathable clothes that remain comfortable through warm evenings. Air conditioning is a sensible accommodation priority if you struggle to sleep in the heat. The sea averages 27.6°C, making swimming an easy part of the holiday rather than something to brace yourself for. It will feel warm, though, so do not expect a sharply cooling dip.

Plan for rain, not a washout

May is a wet-weather compromise rather than the strongest choice for dependable sunshine. About 5.1 hours of sunshine sit within 12.6 hours of daylight, so long days do not mean clear skies throughout. Leave room to move outdoor plans around and carry a light waterproof that will not feel too heavy in humid conditions. The rainfall figures do not tell you when rain will arrive or how long it will last, so avoid building your plans around an assumed dry morning or afternoon. May still makes sense if warmth and swimming matter more to you than spending every day under blue skies.