September brings 30°C daytime highs, 39mm of precipitation across about 4 wet days and 12 hours of daylight — best for beach days, swimming and reliable sunshine. The strongest run of the year is August to October. May is the quietest month: quiet and local, and still good for green season and quiet and local.
Long-run climate normals for Lamu. Month ratings compare months within Lamu only — they are not a ranking of Lamu against other destinations, and they are not a forecast for a specific year.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone. Showing .
| Best month | September — Beach days, Swimming, Reliable sunshine |
| Best 3-month window | August–October |
| Quietest month | May — Quiet and local |
| Driest month | January — 39mm |
| Wettest month | May — 129mm |
| Warmest / coolest | January 32°C / October 30°C |
| Seasonality | Fairly even across the year |
| Annual rainfall | 918mm over roughly 98 rain days |
May gets roughly 231% more precipitation than September — 129mm against 39mm. That difference, more than temperature, is what changes how a day here feels.
Daytime highs only move 2°C across the whole year (30–32°C), so timing matters far less here than rainfall does.
January is the driest month at 39mm across roughly 4 wet days, while May peaks at 129mm.
August is almost as good as September, but usually quieter and cheaper. If your dates are flexible, it is the easier trip.
Lamu stays fairly consistent all year, so there is no month you need to avoid. What you plan to do matters more than when you go.
Ratings compare months within Lamu, not against destinations worldwide: five stars means the best time to be here, not that Lamu beats anywhere else. Tags describe what the conditions actually suit.
| Month | Rating | High / Low | Precipitation | Wet days | Sun | Daylight | Best for |
|---|---|---|---|---|---|---|---|
| January | ★★★★★ | 32°C / 26°C | 39mm | 4 | 11h | 12.1h | Beach days · Swimming · Reliable sunshine |
| February | ★★★★★ | 32°C / 26°C | 39mm | 4 | 11h | 12.1h | Beach days · Swimming · Reliable sunshine |
| March | ★★★☆☆ | 32°C / 26°C | 75mm | 8 | 9h | 12h | Beach days · Swimming · Reliable sunshine |
| April | ★★☆☆☆ | 32°C / 26°C | 111mm | 12 | 7h | 11.9h | Beach days · Swimming · Quiet and local |
| May | ★★☆☆☆ | 32°C / 26°C | 129mm | 14 | 6h | 11.9h | Green season · Quiet and local |
| June | ★★☆☆☆ | 31°C / 25°C | 111mm | 12 | 7h | 11.9h | Beach days · Swimming · Quiet and local |
| July | ★★★★☆ | 31°C / 25°C | 75mm | 8 | 9h | 11.9h | Beach days · Swimming · Reliable sunshine |
| August | ★★★★★ | 30°C / 24°C | 39mm | 4 | 11h | 11.9h | Beach days · Swimming · Reliable sunshine |
| September | ★★★★★ | 30°C / 24°C | 39mm | 4 | 11h | 12h | Beach days · Swimming · Reliable sunshine |
| October | ★★★★☆ | 30°C / 24°C | 75mm | 8 | 9h | 12.1h | Beach days · Swimming · Reliable sunshine |
| November | ★★☆☆☆ | 31°C / 25°C | 111mm | 12 | 7h | 12.1h | Beach days · Swimming · Quiet and local |
| December | ★★★★☆ | 31°C / 25°C | 75mm | 8 | 9h | 12.1h | Beach days · Swimming · Reliable sunshine |
| You are planning | Pick | Why |
|---|---|---|
| Sun & beach days | August | 11h daily sunshine, 30°C highs and only 4 rain days. |
| City walking & sightseeing | August | 30°C highs with 11.9h of daylight — long days without heat fatigue. |
| Photography & light | January | 11h of sun and 12.1h daylight give the widest window for golden-hour work. |
| Value & fewer crowds | February | Scores 72/100 — close to peak conditions but outside the busiest window. |
| Cooler-weather travel | August | 30°C highs and 24°C nights suit anyone who dislikes heat. |
Each month in Lamu is described from long-run climate normals and then rated relative to the other eleven months in the same city. A five-star January in a cold destination means January is one of the best times to be there — not that it beats a Mediterranean summer.
| Factor | Weight | What it measures |
|---|---|---|
| Temperature | Described | Average daytime high and overnight low for the month, shown as measured rather than judged. |
| Precipitation | Described | Monthly millimetres and wet-day count, labelled as snow or rain/snow where temperatures make that the likely phase. |
| Sunshine & daylight | Described | Average daily sunshine hours and astronomical daylight length at mid-month, from the city’s latitude. |
| “Best for” tags | Derived | Applied only when the conditions genuinely support the activity — snow depth-friendly cold for skiing, 13–24°C and low rain risk for hiking, dark evenings at high latitude for aurora. A month with few strong use cases gets fewer tags rather than padded ones. |
| Star rating | Relative | Ranks the month against the other eleven months in the same city. Never a comparison between cities. |
Figures are long-run climate averages, not a forecast for a specific year. This city has no published month-by-month normals on file, so monthly temperatures are interpolated from its summer and winter averages and rainfall is modelled from rain-day frequency.
September is the best all-round month in Lamu: 30°C highs, 39mm of precipitation and 12 hours of daylight, which suits beach days, swimming and reliable sunshine. The strongest three-month window is August to October.
May — 32°C highs, 129mm of precipitation over roughly 14 days and 11.9 hours of daylight. It is the cheapest and least crowded time to go, and it still works for green season and quiet and local.
January is the driest month at 39mm over about 4 rain days, against 129mm in May. Across the year Lamu records around 918mm.
Yes — conditions in Lamu stay fairly even all year, so there is no month you need to avoid. What you plan to do matters more than when you go.
Daylight ranges from 11.9 hours in April to 12.1 hours in January, calculated from the city's latitude.