Is today a good day for snorkeling in Lisbon?
Today is not the day.
Not a day for snorkelling. A 0.8 m sea running. Out of season for it, whatever the weather does.
Not today35/100
7-day outlook for snorkeling in Lisbon
Best day looks like Today at 35/100.
Why this score?
Data from Open-Meteo, and Open-Meteo Marine for waves and sea temperature. Last updated 19:54 UTC.
Snorkeling in Lisbon, month by month
The sea is warmest in June at 20°C and coldest in February at 15°C. Offshore waves are biggest in March (the day's highest averages 1.9 m) and smallest in July (0.7 m). Daytime highs peak at 29°C in July and fall to 15°C in January. October is the wettest month, with about 10 days of 1 mm or more; July is the driest, with about 0.
Our seasonal guide puts snorkeling in season from May to October.
| Month | Sea temperature (°C) | Offshore wave height (m) | Daytime high (°C) | Rainy days (days) |
|---|---|---|---|---|
| January | 15 | 1.5 | 15 | 7 |
| February | 15 | 1.4 | 17 | 7 |
| March | 15 | 1.9 | 18 | 9 |
| April | 17 | 1.2 | 20 | 9 |
| May (in season) | 18 | 0.9 | 23 | 4 |
| June (in season) | 20 | 0.9 | 25 | 5 |
| July (in season) | 20 | 0.7 | 29 | 0 |
| August (in season) | 19 | 0.8 | 29 | 0 |
| September (in season) | 19 | 0.9 | 26 | 7 |
| October (in season) | 19 | 1.5 | 23 | 10 |
| November | 17 | 1.5 | 19 | 9 |
| December | 16 | 1.4 | 16 | 9 |
In season, by our seasonal guide
Averages of daily weather 2020 to 2024 and of waves and sea temperature 2022 to 2024, from ERA5 reanalysis data (about 25 km resolution; waves are measured offshore, not in the surf at the beach). Not a forecast.
About snorkeling in Lisbon
The Tagus on one side, Atlantic surf beaches 30 minutes away on the other, and 300 days of sunshine a year.
Go Daisy scores 47 activities for Lisbon, including running, cycling, urban exploring, photography, outdoor yoga. The score for snorkeling updates hourly from the same weather data professional services use.
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Score for snorkeling in Lisbon updated hourly. Free, ad-free. Built by independent makers in the UK and Asturias, Spain.
Weather data from Open-Meteo.