October weather forecast
Lisbon, Portugal

October in Lisbon bears witness to the onset of autumn, with temperatures gradually declining. As the city braces for winter, rainfall frequency increases, with an average precipitation of 101mm. Despite this, Lisbon retains its charm, with alternating periods of sun and showers. The diminishing daylight hours and decline in UV index give the city a new character, making it an interesting time for tourists to explore. However, the falling temperatures require appropriate clothing, particularly in the mornings and evenings.

Temperature

The arrival of October in Lisbon, Portugal, suggests a slight decrease in the average high-temperature, moving from a moderately hot 26.5°C in September to a pleasant 22.5°C. During October, the temperature in Lisbon, Portugal, is averaged to a low of 15.1°C at night.

Rainfall

In October, the rain falls for 10 days. Throughout October, 101mm of precipitation is accumulated. In Lisbon, during the entire year, the rain falls for 112 days and collects up to 774mm of precipitation.

Sea temperature

In Lisbon, the average seawater temperature in October is 19.8°C.
Note: Swimming in water with a temperature of 19.8°C is not a pleasurable experience for the majority. As the temperature falls below 21°C, it becomes increasingly hard to control one's breathing.

Daylight

In October, the average length of the day is 11h and 11min.
On the first day of October in Lisbon, sunrise is at 07:32 and sunset at 19:20 WEST. On the last day of the month, sunrise is at 07:02 and sunset at 17:38 WET.
Note: On Sunday, 29. October 2023, at 02:00, Daylight Saving Time ends, and the time zone changes from WEST to WET. Daylight Saving Time starts again on Sunday, 31. March 2024, at 01:00; consequently, the time zone reverts from WET to WEST.

Sunshine

The average sunshine in October in Lisbon, Portugal, is 7h.

UV index

In Lisbon, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 in October converts into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.