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Comporta weather forecast and sea temperature

Right now in Comporta: clear skies, 23°C, feels like 24°C.

Expect a mostly clear week in Comporta, with temperatures staying fairly steady between 16°C and 33°C.

Daytime highs this week are close to the August average of 28°C.

Sunrise: 07:01 · Sunset: 20:11 · Day length: 13h 10m

Comporta sea temperature today

Sea water: 20.0°C, cooling slightly to around 20°C over the coming days

Wave height: 1.6m (min 0.6m on 2026-09-03, max 1.6m on 2026-08-28)

Comporta water temperature for the next 7 days · Sea temperature along the whole coast

Next 24 hours

20:00 23°
21:00 22°
22:00 21°
23:00 21°
00:00 20°
01:00 19°
02:00 19°
03:00 18°
04:00 18°
05:00 18°
06:00 18°
07:00 18°
08:00 18°
09:00 19°
10:00 20°
11:00 22°
12:00 23°
13:00 25°
14:00 26°
15:00 26°
16:00 25°
17:00 26°
18:00 26°
19:00 26°
  1. Fri 28/08 clear skies 25°16°
  2. Sat 29/08 sunny and clear 26°18°
  3. Sun 30/08 bright and clear 28°20°
  4. Mon 31/08 clear skies 30°18°
  5. Tue 01/09 sunny and clear 28°18°
  6. Wed 02/09 bright and clear 29°18°
  7. Thu 03/09 clear skies 33°19°

Comporta sits on the Tróia sand spit in the Setúbal district, with rice paddies and umbrella pines behind it and a long line of ocean sand in front. The village is small and deliberately low key, and the beaches either side of it stay close to empty for most of the year despite being little over an hour from Lisbon. There is nothing on the horizon but dune.

Summers run to 26–29 °C, hotter than the exposed coast further north because the land behind holds the heat, with a breeze off the sea most afternoons. Winter is mild at 15–16 °C. The beaches face the open Atlantic, so the sea is cool and lively, sitting at about 17–19 °C through summer and reaching its best in September.

Climate through the year

Month Min (°C) Max (°C) Rainy days
January 9.2 15.4 8.1
February 9.7 16.6 7.1
March 10.5 17.4 10.2
April 12.4 19.3 10.4
May 14.7 22.3 4.6
June 16.8 24.6 3.9
July 18.2 27.1 0.7
August 18.4 27.7 0.2
September 17.3 25.3 2.9
October 15.7 22.8 8.8
November 12.5 18.4 10.3
December 10.2 16.4 8.5

Going by Comporta's own averages, June is the most balanced month: highs near 25 °C and about 4 rainy days. The hottest month is August at 28 °C, and the wettest is April with 10 rainy days.

Averages for 2016–2025. A rainy day is one with at least 1 mm of precipitation.

When is the sea warmest in Comporta?

September, when it edges up to around 18–19 °C after the summer wind drops away. Through July and August upwelling keeps the ocean here in the 17–19 °C range, which is refreshing rather than warm on a hot day.

What is Comporta like?

Quiet and unbuilt. There are no high-rise resorts, just dune, pine and rice fields with a handful of beach restaurants, and the sand runs for kilometres in both directions. It has become fashionable in recent years, which shows in the prices rather than in the crowds.

Is Comporta good for children?

The space is unbeatable and the sand is soft and clean, but the water is open Atlantic with waves and currents, so keep young swimmers close and near the lifeguards. For calm water, the estuary beaches on the Tróia side of the peninsula are the better option on a rough day.