October weather forecast
Porto, Portugal

October brings a significant change in Porto's weather. The mild temperatures of September make way for a more pronounced decrease in warmth. Rainfall rises significantly to 158mm (6.22"), a stark jump from the previous month. The daylight hours wane noticeably as the city transitions towards winter. Autumn colors adorn Porto, with the crisp air and overcast days adding to the charm of the season.

Temperature

The arrival of October corresponds with a light shift in temperature, down from a warm 24.1°C (75.4°F) in September to a pleasant 20.7°C (69.3°F). October brings Porto a consistent average low-temperature of 12.2°C (54°F).

Rainfall

In October, in Porto, Portugal, the rain falls for 14 days. Throughout October, 158mm (6.22") of precipitation is accumulated. In Porto, during the entire year, the rain falls for 147 days and collects up to 1237mm (48.7") of precipitation.

Sea temperature

In Porto, Portugal, the average seawater temperature in October is 17.8°C (64°F).
Note: Most people do not find pleasure in swimming when the water temperature is 17.8°C (64°F). Breathing becomes increasingly difficult to manage as the water temperature drops from 21°C (69.8°F) to 15°C (59°F).

Daylight

The average length of the day in October is 11h and 6min.
On the first day of the month, sunrise is at 07:31 and sunset at 19:16 WEST. On the last day of October, sunrise is at 07:05 and sunset at 17:31 WET.
Note: On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends, and the time zone changes from WEST to WET. Daylight Saving Time starts again on Sunday, 30. March 2025, at 01:00; consequently, the time zone reverts from WET to WEST.

Sunshine

In October, the average sunshine in Porto, Portugal, is 5.9h.

UV index

In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 4 in October transforms into this advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.