Quick answer: The best time to visit Portugal is May–June and September–October. Peak season is July–August (Algarve packed), and the months to avoid are nothing severe — winter is just cooler and wetter.
Portugal enjoys a mild, sunny climate with warm summers and gentle, wetter winters. Late spring and early autumn are ideal — warm and sunny without the Algarve’s peak-summer crowds.
Portugal Weather by Month
| Month | Avg High | Avg Low | Rain | Crowds | Verdict |
|---|---|---|---|---|---|
| January | 15°C / 59°F | 8°C / 46°F | Wet | Low | Shoulder — Mild and wet; very cheap. |
| February | 16°C / 61°F | 8°C / 46°F | Wet | Low | Shoulder — Mild; almond blossom in the Algarve. |
| March | 18°C / 64°F | 9°C / 48°F | Light | Med | Good — Spring; pleasant and quiet. |
| April | 20°C / 68°F | 11°C / 52°F | Light | Med | Great — Warm and blooming; great value. |
| May | 23°C / 73°F | 13°C / 55°F | Dry | High | Best — Warm, sunny and ideal. |
| June | 26°C / 79°F | 15°C / 59°F | Dry | High | Great — Warm, dry, with long days. |
| July | 28°C / 82°F | 17°C / 63°F | Dry | High | Mixed — Hot and sunny; the Algarve is packed. |
| August | 29°C / 84°F | 17°C / 63°F | Dry | High | Mixed — Hottest and busiest. |
| September | 27°C / 81°F | 16°C / 61°F | Dry | High | Best — Warm sea, easing crowds — the sweet spot. |
| October | 22°C / 72°F | 13°C / 55°F | Light | Med | Best — Mild, pleasant, fewer tourists. |
| November | 17°C / 63°F | 10°C / 50°F | Wet | Low | Shoulder — Cooler and wetter; quiet. |
| December | 15°C / 59°F | 8°C / 46°F | Wet | Low | Shoulder — Mild and wet; festive. |
Best Time to Visit Portugal
For the best balance of weather, value and manageable crowds, target May–June and September–October. The table above breaks down every month so you can match the season to your trip.
Portugal Weather in July
July is peak season in Portugal — hot, dry and sunny, with the Algarve’s beaches at their busiest and priciest. Lisbon and Porto stay comfortable with Atlantic breezes; book accommodation well ahead.
Portugal Weather in September
September is the ideal month: the sea is at its warmest, days are still hot and sunny, and the summer crowds have thinned. Prices drop noticeably from mid-month.
Frequently Asked Questions
When is the best time to visit Portugal?
May–June and September–October — warm, sunny weather and fewer crowds than the July–August Algarve peak.
Is the sea warm in Portugal?
The Atlantic is cool; it is warmest (and most swimmable) from July to September, especially in the Algarve.
When is the cheapest time to visit Portugal?
November–March is cheapest, with mild Lisbon and Algarve days, though it is wetter and some beach resorts wind down.
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Written by
John Morrison is the founder and lead travel writer at Packzup. Over the past decade he has explored destinations across Africa, the Americas, Asia, Europe, the Middle East, and Oceania — always self-funded, never on a press trip.