Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
IdealGood periodTransitionAvoid
Quick decision
Go now or wait?
April-June, Sept-Oct
- Warm, sunny days, 18-25°
- Ideal for exploring the hilly streets and miradouros on foot
- Fewer crowds and lower prices than August
- Perfect timing for a Sintra or coastal day trip
July and August
- Hottest, driest months, often above 28-30°
- Beaches and river bars in full swing
- Peak season: higher prices, more crowds
- Occasional heatwaves further inland
December to February
- Coolest and rainiest months, but rarely cold, 10-15°
- Frequent showers, some grey days
- Lowest prices and quietest streets
- Still comfortable for sightseeing between showers
Detailed view
Month by month
Average temperatureSea temperature (coast)
January
15°
15°
February
16°
15°
March
18°
15°
April
19°
16°
May
21°
17°
June
25°
18°
July
28°
19°
August
28°
19°
September
26°
19°
October
22°
18°
November
18°
17°
December
15°
16°
Still wondering
Frequently asked questions
Is Lisbon hot in summer?
Yes, July and August regularly reach 28-30° with intense sun, though Atlantic breezes keep evenings pleasant. The ocean stays cooler than the Mediterranean, around 19°, so swimming is refreshing rather than bath-warm.
Is winter worth visiting?
Yes, for lower prices and quiet streets — it rarely gets truly cold, with highs around 10-15°. The main downside is more frequent rain, especially November through January.
Best month for a first visit balancing weather, crowds and price?
Late April to May, or September to early October: warm and sunny, before or after the July-August crowds and price spikes.
Tell us when, we'll tell you where.
That's the Les Voyagistes principle: tell us your dates, and we'll reveal the destinations that are in perfect season.
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