Greece · Attica
Sea temperature at Asteria Glyfadas
Warm and pleasant for swimming
Sample dataUpdated hourly from the live marine forecast. See the 12-month typical range and, where available, real measured readings further down the page.
7-day outlook
Sample dataModeled placeholder forecast for demonstration — will be replaced by a live marine-weather feed.
Sea temperature
Next 7 days, °C
View as table
| Day | Sea temp (°C) |
|---|---|
| Wed 2 | 25.8 |
| Thu 3 | 25.3 |
| Fri 4 | 24.9 |
| Sat 5 | 24.8 |
| Sun 6 | 25.1 |
| Mon 7 | 25.6 |
| Tue 8 | 25.9 |
Sea temperature by month
Modeled climatology derived from latitude and season.
Typical vs. measured sea temperature
12-month view, °C — modeled line vs. measured sample averages
View as table
| Month | Modeled (°C) | Measured avg. (°C) |
|---|---|---|
| Jan | 16 | — |
| Feb | 16 | — |
| Mar | 16 | — |
| Apr | 18 | — |
| May | 21 | — |
| Jun | 24 | — |
| Jul | 26 | — |
| Aug | 27 | — |
| Sep | 26 | — |
| Oct | 24 | — |
| Nov | 21 | — |
| Dec | 18 | — |
No measured in-season sea temperature has been published for Asteria Glyfadas yet — the chart above shows the modeled climatology only. Some countries (Croatia, via IZOR) also record the sea temperature at each official water sample; check the water quality page for this beach's sampling status.
Frequently asked questions
How warm is the sea at Asteria Glyfadas right now?
That ~25°C figure is a placeholder, not a live reading — Asteria Glyfadas's marine feed couldn't be reached, and it'll be swapped for the real value automatically once it responds again. That's the reading right off Attica.
What's the ideal time of year to swim at Asteria Glyfadas?
For water above the comfortably-warm 22°C mark, target June–October — August is typically the high point of that window on the modeled curve. That applies to the water around Attica.
Is the sea temperature chart above measured or estimated?
Estimated, not measured, for Asteria Glyfadas: the chart above models from latitude and season. Some national authorities (Croatia, via IZOR) additionally publish the sea temperature at each official sample, shown alongside the modeled curve when that data exists.