Climate guide for Lesbos, Greece

Best Time to Visit
Lesbos

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01 · Greece

About Lesbos

Lesbos lies in the eastern Aegean close to the Turkish coast, a fertile island of olive groves, hot springs and long beaches. Mytilene has a castle and a busy harbour, Molyvos climbs to a Byzantine castle above the sea, and Plomari is known for ouzo. The petrified forest around Sigri preserves fossilised trees, and the Gulf of Kalloni is a stopping point for migrating birds. April to June and September to October are the most comfortable months, and winter is mild and wet.

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Did you know?

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Travel Tips

01Best time & timing
June leads the year at 10.0/10, with July and August close behind — December (4.7/10) is the one to avoid without a specific reason.
02Weather & what to pack
In June plan for about 26°C; the month brings 13 mm of rain. Pack the lightest clothing you own, a hat and more water than feels necessary.
03Crowds & value
Crowds build in July and rates follow; May usually pairs good conditions (8.8/10) with the lowest prices of the strong months.

Things to do in Lesbos

Lesbos, Greece. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Lesbos: the short answer

Plan Lesbos for June, with July, August close behind — the stretch with the most usable temperatures and the fewest lost days to rain: June averages 26°C with 13 mm of rain and about 30 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are December, November. If budget matters more than perfect weather, April is the strongest of the low-rate months at 6.4/10.

Across the year Lesbos swings from 9°C in February to 29°C in July, a 20-degree spread, while rainfall ranges from 3 mm in August to 100 mm in December. In short, Lesbos is not equally good year-round — the gap between its best and worst month is 5.3 points on the same 10-point scale.

Warmest month: July (29°C). Coolest: February (9°C). Driest: August (3 mm). Wettest: December (100 mm).

Lesbos month by month

January in Lesbos: mixed conditions, plan around the weather

Trade-offs · 5/10

Expect 10°C (50°F) in January. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 81 mm of rain this month — a flexible day or two helps — with about 22 days with 6+ hours of sunshine and 9.8 hours of daylight to work around it.

That is 5/10 on the same scale — 10th of 12 months, versus 10/10 for the best month here.

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

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Lesbos — 5 points higher on the same scale.

February in Lesbos — workable with trade-offs

Trade-offs · 5.5/10

Expect 9°C (49°F) in February. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 63 mm of rain this month — a flexible day or two helps — with about 23 days with 6+ hours of sunshine and 10.7 hours of daylight to work around it.

That is 5.5/10 on the same scale — 9th of 12 months, versus 10/10 for the best month here.

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

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Lesbos — 4.5 points higher on the same scale.

March in Lesbos — middling scores, decent value

Trade-offs · 5.6/10

March averages 11°C (52°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 65 mm, so plan one flexible day in three; you still get about 27 days with 6+ hours of sunshine and 12 hours of daylight.

It scores 5.6/10 here, 8th of 12 months, against 10/10 in the destination's best month.

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

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

Flexible dates? June scores 4.4 points higher here — enough to change the trip.

April in Lesbos — middling scores, decent value

Trade-offs · 6.4/10

Temperatures hover around 16°C (60°F) — the kind of month where neither heat nor cold forces the schedule.

With around 43 mm of rain, any showers tend to pass through rather than settle in; about 28 days with 6+ hours of sunshine and 13.3 hours of daylight fill the rest.

That is 6.4/10 on the same scale — 7th of 12 months, versus 10/10 for the best month here.

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

Pack layers you can shed by midday plus one warm layer for the evening.

If your dates are flexible, June is materially better in Lesbos — 3.6 points higher on the same scale.

May ranks 5th of 12 for Lesbos — one of the best windows

Best window · 8.8/10

May averages 20°C (68°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Expect 31 mm of rain — occasional showers rather than washed-out days — alongside about 30 days with 6+ hours of sunshine and 14.3 daylight hours.

A 8.8/10 puts this among the year's best months in Lesbos (5th of 12); only June scores higher, at 10/10.

Plan for mid-season pricing, with crowds are moderate.

Pack light clothing, swimwear and real sun protection.

June in Lesbos tops the year's climate scores

Best window · 10/10

Days in June average 26°C (79°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

At just 13 mm for the month, rain will not shape your plans; you get about 30 days with 6+ hours of sunshine and 14.9 hours of daylight.

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

Expect peak pricing, and 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.

July in Lesbos — one of the year's strongest windows (2nd)

Best window · 10/10

Days in July average 29°C (84°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

At just 3 mm for the month, rain will not shape your plans; you get about 31 days with 6+ hours of sunshine and 14.6 hours of daylight.

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

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.

August ranks 3rd of 12 for Lesbos — one of the best windows

Best window · 10/10

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

Rain is a non-issue at 3 mm for the month, with about 31 days with 6+ hours of sunshine and 13.7 hours of daylight to work with.

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

Figure on peak pricing, with 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.

September ranks 4th of 12 for Lesbos — one of the best windows

Best window · 10/10

September averages 24°C (75°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 14 mm for the month, with about 29 days with 6+ hours of sunshine and 12.4 hours of daylight to work with.

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

Figure on peak pricing, with crowds are moderate.

Pack light clothing, swimwear and real sun protection.

October in Lesbos — reliably good (6th best month)

Good · 7.7/10

Temperatures hover around 19°C (65°F) — the kind of month where neither heat nor cold forces the schedule.

With around 36 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 11.2 hours of daylight fill the rest.

That is 7.7/10 on the same scale — 6th of 12 months, versus 10/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening.

If your dates are flexible, June is materially better in Lesbos — 2.3 points higher on the same scale.

November in Lesbos — middling scores, decent value

Trade-offs · 5/10

Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.

Budget for roughly 89 mm of rain this month — a flexible day or two helps — with about 23 days with 6+ hours of sunshine and 10 hours of daylight to work around it.

That is 5/10 on the same scale — 11th of 12 months, versus 10/10 for the best month here.

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

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

If your dates are flexible, June is materially better in Lesbos — 5 points higher on the same scale.

December in Lesbos — the hardest end of the year

Hardest · 4.7/10

December averages 11°C (53°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 100 mm, so plan one flexible day in three; you still get about 22 days with 6+ hours of sunshine and 9.5 hours of daylight.

It scores 4.7/10 here, 12th of 12 months, against 10/10 in the destination's best month.

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

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

Flexible dates? June scores 5.3 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Lesbos, Greece?
In Ideal Weather mode, the best months to visit Lesbos are June, July, August, September. June is the single peak month with an Ideal Weather score of 10.0/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Lesbos year-round?
Lesbos has a climate profile suited to beach and coastal travel. Average monthly temperatures range from 9°C in February to 29°C in July, with Ideal Weather scores between 4.7 and 10.0 out of 10.
Which months should I avoid in Lesbos?
The lowest Ideal Weather-scoring months in Lesbos are December (4.7/10), January (5.0/10), November (5.0/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Lesbos?
December is the wettest month in Lesbos, averaging about 100 mm of rainfall. August is the driest, at roughly 3 mm.
Which is the sunniest month in Lesbos?
July sees the most sun in Lesbos, with about 31 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Lesbos a good destination for beach and coastal travel?
Lesbos is well suited to beach and coastal travel. Its highest Ideal Weather window (June, July, August, September) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Lesbos calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Lesbos: 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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