Climate guide for Mombasa, Kenya

Best Time to Visit
Mombasa

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01 · Kenya

About Mombasa

Mombasa's old town crowds around Fort Jesus, a Portuguese fortress that is now a UNESCO site, with narrow lanes, carved doors and a dhow harbour beside it. North and south of the island, beaches at Nyali, Bamburi and Diani serve resorts and diving, while the Shimba hills and Tsavo parks are within reach. December to March and July to October are the drier, cooler windows; the long rains fall around April and May.

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Did you know?

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Travel Tips

01Old Town & Fort Jesus
Explore Mombasa Old Town in the morning when lanes are cooler, then tour Fort Jesus before midday heat. Wear modest clothing near mosques and carry small cash for entry fees.
02Beach & Swim Safety
South and north coast beaches vary in currents and seasonal jellyfish - swim in lifeguarded zones. Reef shoes help on coral shelves at low tide.
03Ferry & Nyali Bridge
The Likoni ferry can have long queues at rush hour - allow extra time. Ride-hailing apps work on both sides of the channel; agree fares if using street taxis.
04Heat & Hydration
Coastal humidity is high year-round. Drink bottled water, use strong sunscreen, and schedule outdoor sightseeing for early morning or late afternoon.

Things to do in Mombasa

Mombasa, Kenya. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Mombasa: the short answer

Plan Mombasa for January, with February, March close behind — the stretch with the most usable temperatures and the fewest lost days to rain: January averages 28°C with 19 mm of rain and about 28 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are May, April. If budget matters more than perfect weather, September is the strongest of the low-rate months at 7.9/10.

Across the year Mombasa swings from 23°C in July to 28°C in February, a 5-degree spread, while rainfall ranges from 19 mm in January to 258 mm in May. In short, Mombasa is not equally good year-round — the gap between its best and worst month is 3 points on the same 10-point scale.

Warmest month: February (28°C). Coolest: July (23°C). Driest: January (19 mm). Wettest: May (258 mm).

Mombasa month by month

January in Mombasa tops the year's climate scores

Best window · 9.8/10

Days in January average 28°C (82°F) and humidity near 74% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

With around 19 mm of rain, any showers tend to pass through rather than settle in; about 28 days with 6+ hours of sunshine and 12.2 hours of daylight fill the rest.

On our climate-comfort scale this is the top-ranked month of the year for Mombasa at 9.8/10 — the reference point every other month on this page is measured against.

Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.

February ranks 2nd of 12 for Mombasa — one of the best windows

Best window · 9.8/10

Days in February average 28°C (83°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

With around 32 mm of rain, any showers tend to pass through rather than settle in; about 28 days with 6+ hours of sunshine and 12.1 hours of daylight fill the rest.

On our climate-comfort scale this is one of the strongest months of the year for Mombasa at 9.8/10 (2nd of 12), just behind January at 9.8/10.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.

March ranks 3rd of 12 for Mombasa — one of the best windows

Best window · 9.4/10

March averages 28°C (83°F) and humidity near 72%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 50 mm, so plan one flexible day in three; you still get about 30 days with 6+ hours of sunshine and 12 hours of daylight.

A 9.4/10 puts this among the year's best months in Mombasa (3rd of 12); only January scores higher, at 9.8/10.

Plan for peak pricing, with crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

April in Mombasa: mixed conditions, plan around the weather

Trade-offs · 6.8/10

Days in April average 27°C (80°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 237 mm, but with about 20 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 6.8/10 on the same scale — 11th of 12 months, versus 9.8/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, January is materially better in Mombasa — 3 points higher on the same scale.

May in Mombasa — workable with trade-offs

Trade-offs · 6.8/10

May averages 25°C (78°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

258 mm makes this the wettest stretch of the year, though about 21 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.

It scores 6.8/10 here, 12th of 12 months, against 9.8/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

Flexible dates? January scores 3 points higher here — enough to change the trip.

June in Mombasa: strong conditions, 9th of 12

Good · 7.6/10

With 24°C (76°F) on average, June delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

112 mm of rain signals a properly wet month, with only about 18 days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 7.6/10 on the same scale — 9th of 12 months, versus 9.8/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

If your dates are flexible, January is materially better in Mombasa — 2.2 points higher on the same scale.

July in Mombasa — reliably good (7th best month)

Good · 8/10

With 23°C (74°F) on average, July delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

Budget for roughly 83 mm of rain this month — a flexible day or two helps — with about 18 days with 6+ hours of sunshine and 11.8 hours of daylight to work around it.

That is 8/10 on the same scale — 7th of 12 months, versus 9.8/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

If your dates are flexible, January is materially better in Mombasa — 1.8 points higher on the same scale.

August is one of the strongest months in Mombasa (4th)

Best window · 9.3/10

August averages 24°C (75°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rainfall runs 49 mm, so plan one flexible day in three; you still get about 24 days with 6+ hours of sunshine and 11.9 hours of daylight.

A 9.3/10 puts this among the year's best months in Mombasa (4th of 12); only January scores higher, at 9.8/10.

Plan for peak pricing, with this is one of the busiest months here.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

September holds up well in Mombasa — 8th best month

Good · 7.9/10

September averages 25°C (76°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Monthly rainfall reaches 126 mm — wet for this destination — but about 27 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 7.9/10 here, 8th of 12 months, against 9.8/10 in the destination's best month.

Plan for low-season pricing, with crowds are light for this destination.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

Flexible dates? January scores 1.9 points higher here — enough to change the trip.

October in Mombasa — one of the year's strongest windows (5th)

Best window · 9.1/10

With 26°C (79°F) on average, October delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

Budget for roughly 61 mm of rain this month — a flexible day or two helps — with about 30 days with 6+ hours of sunshine and 12.1 hours of daylight to work around it.

On our climate-comfort scale this is one of the strongest months of the year for Mombasa at 9.1/10 (5th of 12), just behind January at 9.8/10.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

November in Mombasa: strong conditions, 10th of 12

Good · 7.2/10

Days in November average 27°C (80°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 209 mm, but with about 26 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 7.2/10 on the same scale — 10th of 12 months, versus 9.8/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, January is materially better in Mombasa — 2.6 points higher on the same scale.

December ranks 6th of 12 for Mombasa — one of the best windows

Best window · 8.7/10

December averages 27°C (81°F) and humidity near 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 77 mm, so plan one flexible day in three; you still get about 29 days with 6+ hours of sunshine and 12.2 hours of daylight.

A 8.7/10 puts this among the year's best months in Mombasa (6th of 12); only January scores higher, at 9.8/10.

Figure on peak pricing, with crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

FAQ

Frequently asked

When is the best time to visit Mombasa, Kenya?
In Ideal Weather mode, the best months to visit Mombasa are January, February, March, August, October. January is the single peak month with an Ideal Weather score of 9.8/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Mombasa year-round?
Mombasa has a climate profile suited to beach and coastal travel. Average monthly temperatures range from 23°C in July to 28°C in February, with Ideal Weather scores between 6.8 and 9.8 out of 10.
Which months should I avoid in Mombasa?
The lowest Ideal Weather-scoring months in Mombasa are April (6.8/10), May (6.8/10), November (7.2/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Mombasa?
May is the wettest month in Mombasa, averaging about 258 mm of rainfall. January is the driest, at roughly 19 mm.
Which is the sunniest month in Mombasa?
March sees the most sun in Mombasa, with about 30 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Mombasa a good destination for beach and coastal travel?
Mombasa is well suited to beach and coastal travel. Its highest Ideal Weather window (January, February, March, August, October) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Mombasa calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Mombasa: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for beach and coastal travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

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