Month guide · Cacilhas, Portugal

Cacilhas in October: weather and what to expect

In October, Cacilhas averages highs of 21°C and lows of 16°C, with about 10 rainy days and 81 mm of rain. Highs are 3°C cooler than in September and 4°C warmer than in November. Crowds in the Lisbon area are high. These are regional figures for the wider area.

Based on 1991-2020 climate data · Updated 1 November 2026 · Sources

Average high Regional21°CLow 16°C
Sea temperature Modelled18°COpen sea nearby, average for the month
Rainy days Regional1081 mm in total
UV index Modelled4Moderate at noon on a clear day
Crowds RegionalHighThe Lisbon area as a whole

Is October a good time to visit?

Good for

No verdicts for Cacilhas in October yet. They only use climate values that are precise enough to judge with.

Not ideal for

Nothing stands out as a weaker fit.

Daily highs through October

Regional · ERA5-Land 1991-2020
Usual range (8 in 10 years)Typical high

Highs fall about 3°C over the month.

October in detail

Regional · ERA5-Land
MeasureSeptemberOctoberNovember
Average high25°C21°C17°C
Average low18°C16°C13°C
Rainy days (at least 1 mm)51011
Total rainfall31 mm81 mm85 mm
Daylight (mid-month)12 h 30 min11 h 16 min10 h 06 min

Crowds, holidays and daylight

Visitor level RegionalHighNights booked through online platforms in the Lisbon area in October 2025: about 75% of the busiest month.

Public holidays in October 2027

  • 5 Oct Republic Day

Local (municipal) holidays are not included.

Daylight mid-month Exact11 h 16 minSunrise to sunset, calculated from the town's coordinates.

The nearest towns with a warmer October. Distances are in a straight line.

How October is changing

Regional · ERA5-Land

October highs are 2.0°C warmer than in 1991-2000, and October rainfall is down about 20% (2016-2025 against 1991-2000). Days above 25°C in October went from 1.4 to 6.8 a year on average.

Questions about Cacilhas in October

How warm is Cacilhas in October?

Average highs are 21°C and lows 16°C. September averages 25°C and November 17°C. These are regional figures for the wider area.

Does it rain much in Cacilhas in October?

About 10 days have at least 1 mm of rain, with 81 mm in total over the month. These are regional figures for the wider area.

Is Cacilhas busy in October?

In October 2025, nights booked through online platforms in the Lisbon area were about 75% of the busiest month, which we count as high. The figure is for the whole region and leaves out hotels.

How long are the days in Cacilhas in October?

About 11 h 16 min from sunrise to sunset in the middle of the month.

Sources

Climate: ERA5-Land, Copernicus Climate Change Service (C3S) Climate Data Store, contains modified Copernicus information (CC BY 4.0). Crowds: Eurostat, nights spent in short-stay accommodation booked through online platforms (tour_ce_omn12) (CC BY 4.0). Place names and populations: GeoNames (CC BY 4.0). Climate averages cover 1991-2020. Daylight: calculated from the town's coordinates. Full methodology