Climate guide for Sao Tome, Sao Tome and Principe

Best Time to Visit
Sao Tome

How to read the score (0–10)
05810
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About Sao Tome

São Tomé is the natural base for exploring the archipelago's history and tropical geography. The central market, cathedral, presidential area, waterfront, museums, and colonial-era buildings form a walkable core, while old roças, plantations, beaches, and rainforest viewpoints require road travel across the island. Rain, rough sections, and limited services can stretch a day trip, so use a trusted local guide and confirm vehicle arrangements in advance. Ask before photographing people or ceremonies, carry cash for smaller businesses, and do not rely on a same-day connection if your itinerary depends on an inter-island flight.

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Travel Tips

Best time & timing
Check monthly climate scores for Sao Tome before finalizing your trip dates for optimal outdoor comfort.
Getting around
Plan local transport and transfers in Sao Tome early, especially during peak travel months in Sao Tome and Principe.
Packing advice
Pack layerable clothing suitable for sightseeing exploration in Sao Tome's climate conditions.

Things to do in Sao Tome

Sao Tome, Sao Tome and Principe. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Sao Tome: the short answer

The best time to visit Sao Tome is July, followed by August, September. Those months combine the most usable temperatures with the fewest lost days to rain: July averages 24°C with 12 mm of rain and about 16 sunny days. The months to avoid unless you have a specific reason are April, March. If budget matters more than perfect weather, October is the strongest of the low-rate months at 5.2/10.

Across the year Sao Tome swings from 24°C in July to 28°C in March, a 4-degree spread, while rainfall ranges from 10 mm in August to 172 mm in November. That is the whole planning problem in one sentence: Sao Tome is not equally good year-round, and the difference between the best and worst month here is 3.9 points on a 10-point scale.

Warmest month: March (28°C). Coolest: July (24°C). Driest: August (10 mm). Wettest: November (172 mm).

Sao Tome month by month

January in Sao Tome — workable with trade-offs

Trade-offs · 5/10

January averages 27°C (81°F) with humidity around 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 112 mm this is a genuinely wet month: about 18 sunny days in total, and outdoor plans need an indoor fallback.

It scores 5/10 here, 7th of 12 months, against 7.8/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

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, July is materially better in Sao Tome — 2.8 points higher on the same scale.

February in Sao Tome — workable with trade-offs

Trade-offs · 5.1/10

February averages 28°C (82°F) with humidity around 82%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 88 mm, so plan one flexible day in three; you still get about 17 sunny days and 12 hours of daylight.

It scores 5.1/10 here, 6th of 12 months, against 7.8/10 in the destination's best month.

Expect mid-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 packable rain layer.

If your dates are flexible, July is materially better in Sao Tome — 2.7 points higher on the same scale.

March in Sao Tome — the hardest end of the year

Hardest · 3.9/10

March averages 28°C (82°F) with humidity around 82%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 168 mm this is a genuinely wet month: about 18 sunny days in total, and outdoor plans need an indoor fallback.

It scores 3.9/10 here, 11th of 12 months, against 7.8/10 in the destination's best month.

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, July is materially better in Sao Tome — 3.9 points higher on the same scale.

April in Sao Tome — the hardest end of the year

Hardest · 3.9/10

April averages 28°C (82°F) with humidity around 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 154 mm this is a genuinely wet month: about 17 sunny days in total, and outdoor plans need an indoor fallback.

It scores 3.9/10 here, 12th of 12 months, against 7.8/10 in the destination's best month.

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, July is materially better in Sao Tome — 3.9 points higher on the same scale.

May in Sao Tome — the hardest end of the year

Hardest · 4.6/10

May averages 27°C (81°F) with humidity around 85%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 115 mm this is a genuinely wet month: about 15 sunny days in total, and outdoor plans need an indoor fallback.

It scores 4.6/10 here, 8th of 12 months, against 7.8/10 in the destination's best month.

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, July is materially better in Sao Tome — 3.2 points higher on the same scale.

June in Sao Tome — reliably good (4th best month)

Good · 7.3/10

June averages 26°C (78°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Expect 23 mm of rain — occasional showers rather than washed-out days — alongside about 17 sunny days and 12 daylight hours.

It scores 7.3/10 here, 4th of 12 months, against 7.8/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection.

July in Sao Tome — the year's strongest window

Best window · 7.8/10

July averages 24°C (76°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rain is a non-issue at 12 mm for the month, with about 16 sunny days and 12 hours of daylight to work with.

On our climate-comfort scale this is the top-ranked month of the year for Sao Tome at 7.8/10 — the reference point every other month on this page is measured against.

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 light clothing, swimwear and real sun protection.

August in Sao Tome — reliably good (2nd best month)

Good · 7.8/10

August averages 25°C (77°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rain is a non-issue at 10 mm for the month, with about 17 sunny days and 12 hours of daylight to work with.

It scores 7.8/10 here, 2nd of 12 months, against 7.8/10 in the destination's best month.

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 light clothing, swimwear and real sun protection.

September in Sao Tome — reliably good (3rd best month)

Good · 7.4/10

September averages 26°C (79°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Expect 23 mm of rain — occasional showers rather than washed-out days — alongside about 19 sunny days and 12 daylight hours.

It scores 7.4/10 here, 3rd of 12 months, against 7.8/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection.

October in Sao Tome — workable with trade-offs

Trade-offs · 5.2/10

October averages 27°C (80°F) with humidity around 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 105 mm this is a genuinely wet month: about 17 sunny days in total, and outdoor plans need an indoor fallback.

It scores 5.2/10 here, 5th of 12 months, against 7.8/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.

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, July is materially better in Sao Tome — 2.6 points higher on the same scale.

November in Sao Tome — the hardest end of the year

Hardest · 4.1/10

November averages 27°C (80°F) with humidity around 85%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 172 mm this is a genuinely wet month: about 14 sunny days in total, and outdoor plans need an indoor fallback.

It scores 4.1/10 here, 10th of 12 months, against 7.8/10 in the destination's best month.

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, July is materially better in Sao Tome — 3.7 points higher on the same scale.

December in Sao Tome — the hardest end of the year

Hardest · 4.4/10

December averages 27°C (81°F) with humidity around 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 140 mm this is a genuinely wet month: about 16 sunny days in total, and outdoor plans need an indoor fallback.

It scores 4.4/10 here, 9th of 12 months, against 7.8/10 in the destination's best month.

Expect mid-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, July is materially better in Sao Tome — 3.4 points higher on the same scale.

Frequently asked

When is the best time to visit Sao Tome, Sao Tome and Principe?
In Ideal Weather mode, the best months to visit Sao Tome are July, August, September, June. July is the single peak month with an Ideal Weather score of 7.8/10 based on temperature, rainfall, humidity, daylight and historical sunny days.
What is the weather like in Sao Tome year-round?
Sao Tome has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 24°C in July to 28°C in March, with Ideal Weather scores between 3.9 and 7.8 out of 10.
Which months should I avoid in Sao Tome?
The lowest Ideal Weather-scoring months in Sao Tome are March (3.9/10), April (3.9/10), November (4.1/10). These months typically combine less comfortable temperatures, higher rainfall or fewer sunny days.
When is the rainy season in Sao Tome?
November is the wettest month in Sao Tome, averaging about 172 mm of rainfall. August is the driest, at roughly 10 mm.
Which is the sunniest month in Sao Tome?
September sees the most sun in Sao Tome, with about 19 sunny days on average - ideal for outdoor plans.
Is Sao Tome a good destination for sightseeing and cultural travel?
Sao Tome is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (July, August, September, June) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Sao Tome calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Sao Tome: temperature comfort, precipitation, humidity, daylight hours, and historical sunny days - weighted for sightseeing and cultural travel.

Explore by month

Curated in Sao Tome

Tickets & experiences