Month guide · Cacilhas, Portugal

Cacilhas in July: weather and what to expect

In July, Cacilhas averages highs of 26°C and lows of 18°C, with about 1 rainy day and 4 mm of rain. Highs are 2°C warmer than in June and 1°C cooler than in August. Crowds in the Lisbon area are at their peak. These are regional figures for the wider area.

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

Average high Regional26°CLow 18°C
Sea temperature Modelled18°COpen sea nearby, average for the month
Rainy days Regional14 mm in total
UV index Modelled9Very high at noon on a clear day
Crowds RegionalPeakThe Lisbon area as a whole

Is July a good time to visit?

Good for

No verdicts for Cacilhas in July 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 July

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

Highs climb about 2°C over the month. A day above 35°C happens in roughly 1 July in 6.

July in detail

Regional · ERA5-Land
MeasureJuneJulyAugust
Average high24°C26°C26°C
Average low17°C18°C19°C
Rainy days (at least 1 mm)312
Total rainfall13 mm4 mm6 mm
Daylight (mid-month)14 h 51 min14 h 38 min13 h 43 min

Crowds, holidays and daylight

Visitor level RegionalPeakNights booked through online platforms in the Lisbon area in July 2025: about 90% of the busiest month.

Public holidays in July 2027

No national or regional public holidays.

Local (municipal) holidays are not included.

Daylight mid-month Exact14 h 38 minSunrise to sunset, calculated from the town's coordinates.

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

How July is changing

Regional · ERA5-Land

July highs are about the same as in 1991-2000 (2016-2025 against 1991-2000). Days above 30°C in July went from 3.0 to 3.0 a year on average.

Questions about Cacilhas in July

How warm is Cacilhas in July?

Average highs are 26°C and lows 18°C. June averages 24°C and August 26°C. These are regional figures for the wider area.

Does it rain much in Cacilhas in July?

About 1 day has at least 1 mm of rain, with 4 mm in total over the month. These are regional figures for the wider area.

Is Cacilhas busy in July?

In July 2025, nights booked through online platforms in the Lisbon area were about 90% of the busiest month, which we count as peak. The figure is for the whole region and leaves out hotels.

How long are the days in Cacilhas in July?

About 14 h 38 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