Diani Beach (Diani) weather in May
May in Diani Beach: hot, soaked, with clean air — fine if you can take 23 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#12 of 12 months in Diani Beach · #1011 of 1413 destinations to visit in May · comfort 71/100 (tier B)
- Days
- 29°C
- Nights
- 24°C
- Wet days
- 23
- Sun
- 9.1 h
- Humidity
- 82%
- Daylight
- 12 h
Traveller notes on Diani Beach in May
Other months in Diani Beach
Diani Beach's forum is split on July: some posters call this some of the coast's best weather, with days in the high 20s C and nights around 22C, while others describe a genuinely messier stretch of mostly cloudy skies and sharp showers with just a couple of sunny hours to work with. Humidity stays high regardless of which pattern you get. The consistent good news is the sea clears up for snorkeling and diving by July, and several posters noted Kenya's weather has gotten less predictable year to year, so it's worth going in with flexible expectations either way.
Forum posters name January and February as the hottest months here, but also the driest - averaging around 5 rainy days a month, the lowest rainfall stretch of the year by posters' count. Sea temperatures in January are reported around 27-28C, genuinely warm for swimming, though posters flag a practical local quirk: low tide (timing varies day to day, sometimes morning, sometimes afternoon) can pull the water back far enough to make swimming impractical for a stretch of any given day regardless of season. Posters generally rate the whole year as good here except for the wetter May-June stretch and a possible rainy patch around September-October, positioning January squarely within the best overall window.
Add your own note from Diani Beach's card on the map.
Diani Beach climate normals — May
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Diani Beach in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 3 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Diani Beach's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherDiani Beach's best weather comes in January, February and August — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Diani Beach in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Green turtle nesting
1 Mar – 31 Jul · usuallyGreen turtles come up the Diani and Galu sand at night through the middle of the year, and local monitors relocate nests that are laid too close to the hotels. Hatchings follow about two months behind. Source ↗
- Season
Low season on the south coast
15 Apr – 15 Jun · usuallyOff-season shutdownClosuresThe long rains empty the south coast. Several of the bigger hotels close for refurbishment, dive centres cut their schedules, and the ones that stay open sell rooms at half the January rate. Source ↗
- Season
Wet season
MonsoonRisk23 rainy days and about 219 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Diani Beach — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Diani Beach?
Diani Beach in May — FAQ
- Is May a good time to visit Diani Beach?
- May in Diani Beach: hot, soaked, with clean air — fine if you can take 23 rainy days. It ranks #12 of 12 months for Diani Beach on SeasonMap's comfort score (71/100).
- What is the weather like in Diani Beach in May?
- In May, Diani Beach averages a daily high of 28.9°C and a low of 24.2°C, with about 219.2 mm of rain over roughly 22.6 rainy days.
- What is the air quality in Diani Beach in May?
- Diani Beach has a mean US Air Quality Index of about 31 in May.
Within 300 km: Mombasa's Green turtle nesting around 1 Mar – 31 Jul, and Zanzibar's Masika, the long rains around 20 Mar – 31 May.