- Climate Type
- Temperate oceanic Mediterranean (Köppen: Csb)
Updated July 2026 · Sources cited: climatestotravel.com, porto-north-portugal.com
Good to know
Good to Know
- Late May through June and September are ideal: warm, dry weather with fewer crowds than July-August peak.
- November through January brings persistent rain and grey skies—plan flexible indoor activities if visiting.
- Summer daytime highs (25-28°C (77–82°F) / 77-82°F) feel comfortable due to Atlantic breezes; evenings rarely drop below 16°C (61°F).
- June through August is reliably dry, though occasional Atlantic fronts can bring rain even in summer.
- Winter temperatures rarely drop below freezing in the city; snow is almost unheard of at sea level.
- Humidity is high year-round (63-87%), peaking January-December and dropping slightly in summer.
- Atlantic Ocean water stays cold (13-18°C (55–64°F) / 55-64°F) even in peak season—not ideal for swimming.
Peak Warm
- Daytime High Celsius
- 25
- Nighttime Low Celsius
- 16
- Daytime High Fahrenheit
- 77
- Nighttime Low Fahrenheit
- 61
Months
- July
- August
Off Peak Cool
- Daytime High Celsius
- 14
- Nighttime Low Celsius
- 5
- Daytime High Fahrenheit
- 57
- Nighttime Low Fahrenheit
- 41
Months
- January
Rainfall
- Dry Season
- June to August
- Wet Season
- October to March
- Annual Total Mm
- 1255
- Annual Total Inches
- 49.4
Driest Months
- Amount Mm
- 22
- Driest Month
- July
- Amount Inches
- 0.9
Peak Rainfall Months
- Amount Mm
- 165
- Amount Inches
- 6.5
- Wettest Month
- November or December
Snowfall
- Status
- Extremely rare
- Frequency
- Approximately once every 5-6 years in the city itself
- Notes
- Coastal location keeps winters wet rather than icy; snowfall is almost unheard of in Porto city center
Best Months
Overall
- May
- June
- July
- August
- September
Peak Season
- July
- August
Shoulder Season
- May
- June
- September
Climate Type
Temperate oceanic Mediterranean (Köppen: Csb)
Worst Months
Worst Months
- January
- November
- December
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Porto
Data last updated July 2026 · Verify anything important.