Lamu weather in December
December in Lamu: sweltering, a little rain, with clean air — fine if you can take 36°C afternoons.
Updated September 2026 · climate normals from ERA5 reanalysis
#8 of 12 months in Lamu · #93 of 1413 destinations to visit in December · comfort 90/100 (tier S)
- Days
- 31°C
- Nights
- 26°C
- Wet days
- 10
- Sun
- 11.4 h
- Humidity
- 75%
- Daylight
- 12 h

Traveller notes on Lamu in December
Other months in Lamu
Regulars are specific weather here stays normally fine through most of this month, the short rains that mark the start of the wetter season typically not arriving in earnest until the very end of October or into November. Our row backs that hot, genuinely wet read, 29C reading as a scorching 33C, over 24.7C nights feeling 28C, with a substantial 52.1mm of rain across 10.9 days and humidity at 76 percent. Regulars are consistent this remains a genuinely viable month for wildlife viewing and general travel along the coast, real rain risk building only as the month winds down. The sea sits at a bath-warm 28.3C. The record: 11.2 hours of sun, a 19.2 kph wind and AQI 33.
Regulars call this Kenya's technical winter, but the coast stays tropical, warm to hot with humid days and cooler but rarely cold evenings - the real change this time of year is wind, not temperature, as the Kusi trade winds arrive and can make the sea genuinely choppy. Our row backs both halves, 27.2C reading as 29C over 23.9C nights, with rain a minor presence at 31.5mm across 11.3 days, tapering off from a wet season regulars say runs into mid-July. Regulars are clear the sun stays strong even on an overcast day this close to the equator, real sunscreen a necessity regardless of cloud cover. The sea sits at 26.2C. The record: humidity 76 percent, 10.9 hours of sun, a 24.9 kph wind and AQI 42.
The coast here is run by two winds with their own names, and March is where one hands over to the other. The kaskazi, the north-east monsoon, has held since November or December and keeps the first part of the month hot and dry. Then the wind swings east and south-east - the kusi - and the long rains follow, triggered around the equinox on about the 22nd, which is why regulars say the rains can arrive in the last few days of March. April, May and June are wet enough that coastal properties close and do not reopen until mid-June or early July. Our row reads the dry three-quarters: 29.1mm across 6.7 days, with 31.5C over 26.4C nights feeling like 37C and 31C. The record: 11 hours of sun, a 28.6C sea and AQI 33.
September is the month the water clears again on this coast: regulars say snorkelling is poor from the end of April until about mid-September, so a trip in the second half of the month catches the turn, and September is not an off-season here in any case. Properties that shut for the wet months of April, May and June have long since reopened. Our row is gentler than January's: 28.1C over 24.1C rather than 30.8C, with 24.6mm across 7.9 precipitation days and a 21.5 kph breeze that January does not have. The sea is 27C. It still reads as 31C by day and 27C at night, so the middle of the day is for shade either way. The record: humidity 75 percent, 11.2 hours of sun and AQI 39.
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Lamu climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Lamu in December
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.
Peak crowdsLamu Cultural Festival, Kaskazi, the calm season, school holidays in 5 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Lamu'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).
Fair weatherLamu's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Lamu in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Lamu Cultural Festival
27 Nov – 4 Dec · usuallyMajor festivalCrowdedThree days at the end of November given over to dhow races, donkey races, bao, henna and Swahili poetry along the seafront. The one stretch when the island's rooms are genuinely tight. Source ↗
- Season
Kaskazi, the calm season
1 Dec – 15 Mar · usuallyMonsoonCrowdedThe northeast monsoon: hot, still and humid, with flat water in the channel and a steady breeze for the dhows. The island's easiest stretch of weather and its busiest.
- Holiday
Festive season peak
18 Dec – 5 JanChristmas & New YearCrowdedBook earlyChristmas to New Year is the busiest fortnight on the coast: Kenyan families and holidaymakers from Nairobi arrive, hotels charge peak rates and book out months ahead, and beaches and restaurants are at their most crowded. New Year's Eve parties run late. Source ↗
Nearby, and something's on
Within 300 km of Lamu — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Lamu?
Lamu in December — FAQ
- Is December a good time to visit Lamu?
- December in Lamu: sweltering, a little rain, with clean air — fine if you can take 36°C afternoons. It ranks #8 of 12 months for Lamu on SeasonMap's comfort score (90/100).
- What is the weather like in Lamu in December?
- In December, Lamu averages a daily high of 30.6°C and a low of 25.9°C, with about 43.8 mm of rain over roughly 10.1 rainy days.
- What is the air quality in Lamu in December?
- Lamu has a mean US Air Quality Index of about 45 in December.
Within 300 km: Mombasa's Whale sharks off the coast around 1 Dec – 31 Mar.