Water temperature in Porto (Continental Portugal) in July

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Is it warm enough to swim in Porto in July? Average water temperature in Porto in July is 17.1°C and therefore is not suitable for comfortable swimming. The warmest sea in Porto in July is 20.3°C, and the coldest is 14.1°C. Average high air temperature in Porto in July is 25°C, and average low temperature is 16°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Porto

Changes water temperature in Porto in July 2025, 2024

To get an accurate forecast for the water temperature in Porto for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Porto, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of July.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 July	17.1°C	18°C	14.3°C	18.7°C
2 July	16.5°C	17.4°C	14.6°C	19.7°C
3 July	17.7°C	16.4°C	14.6°C	19.5°C
4 July	18.4°C	16°C	14.9°C	19.6°C
5 July	18.5°C	16.4°C	14.7°C	19.6°C
6 July	17.3°C	15.1°C	15.1°C	19.8°C
7 July	15.8°C	14.4°C	14.4°C	19.4°C
8 July	16.1°C	14.4°C	14.4°C	19.5°C
9 July	16.7°C	15.1°C	14.8°C	19.4°C
10 July	16.5°C	16.1°C	14.4°C	19.3°C
11 July	17.5°C	16.3°C	14.3°C	19.4°C
12 July	18.5°C	17.1°C	14.7°C	18.5°C
13 July	18.5°C	16.9°C	14.7°C	18.5°C
14 July	17.5°C	16.9°C	14.1°C	18.7°C
15 July	16.6°C	17.8°C	14.6°C	19.2°C

Day	2025	2024	Min	Max
16 July	15.2°C	18.4°C	15.2°C	19.5°C
17 July	16.4°C	18.3°C	15.7°C	18.8°C
18 July	17.3°C	18.3°C	15.5°C	18.3°C
19 July	17.1°C	17°C	15.8°C	18.9°C
20 July	18°C	17.3°C	15.3°C	18.6°C
21 July	17.7°C	16.6°C	15°C	19°C
22 July	17.4°C	15.4°C	14.8°C	18.9°C
23 July	16.9°C	16.3°C	15°C	19.2°C
24 July	15.6°C	17°C	14.3°C	19.1°C
25 July	14.8°C	17.1°C	14.6°C	19.5°C
26 July	15.6°C	16.8°C	14.6°C	19.4°C
27 July	15°C	17.3°C	14.9°C	19.7°C
28 July	14.3°C	17.2°C	14.3°C	19.4°C
29 July	14.9°C	17.5°C	14.9°C	19.7°C
30 July	14.8°C	17.6°C	14.8°C	20.3°C
31 July	15.4°C	17.5°C	14.9°C	20.1°C

Average water temperature in Porto in July over a decade

2016	2017	2018	2019	2020
17.1°C	16.7°C	17.9°C	17.2°C	16.3°C

2021	2022	2023	2024	2025
15.6°C	17.2°C	16.3°C	16.8°C	16.6°C

Porto sea state in July

Chart comparing the height of waves in Porto in July over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Weather and climate in Porto in July

This data display average monthly climate indicators in Porto in July based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

Average HIGH temperature25°C
Average LOW temperature16°C
Average rainfall days6 days
Average rainfall0.8''/20mm
Average daylight15h
Average sunshine9.9h
Average UV index8

Porto water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in July. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Matosinhos	17.1°C	14.1°C	20.2°C
Leixoes	17.1°C	14.1°C	20.2°C
Leca da Palmeira	17°C	14.1°C	20.1°C
Canidelo	17.2°C	14.1°C	20.2°C
Foz do Douro	17.2°C	14.1°C	20.2°C
Vila Nova de Gaia	17.2°C	14.2°C	20.3°C
Valadares	17.2°C	14.2°C	20.3°C
Praia do Senhor da Pedra	17.2°C	14.2°C	20.3°C
Praia de Miramar	17.2°C	14.2°C	20.3°C
Vila do Conde	16.8°C	13.5°C	20.1°C

Porto photo gallery

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Our report for Porto is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature