Grattan Beach
Galway · Ireland
Rating right now
Grattan Beach is a N-facing sand beach on the Irish Sea coastline near Galway — it picks up NW–NE swell and turns cleanest in a SE–SW wind, with the most consistent surf through april–october.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~15.5°C (59.9°F) on average
Jan
9.2°C
48.6°F · 7.9–10.7°C
Feb
8.6°C
47.5°F · 7.5–9.4°C
Mar
8.8°C
47.8°F · 7.8–10.9°C
Apr
9.9°C
49.8°F · 7.9–12°C
May
12.1°C
53.8°F · 10.6–14.4°C
Jun
14.2°C
57.6°F · 12.6–16.1°C
Jul
15.8°C
60.4°F · 14–19.3°C
Aug
16.1°C
61°F · 14.5–18.4°C
Sep
15.5°C
59.9°F · 14.2–17.2°C
Oct
13.9°C
57°F · 12.2–15.3°C
Nov
12°C
53.6°F · 10.3–13.4°C
Dec
10.3°C
50.5°F · 8.8–11.7°C
25-year monthly averages from the NOAA OISST satellite record — typical range min–max, not a live reading.
Know before you go
Best swell
NW–NE
Best wind
SE–SW
Break type
Beach break
Best season
April–October
Safety: Friendly by surf standards, but rip currents and drop-in etiquette still apply. Shifting sandbars create moving rip currents — learn to spot them and use them to get out back.
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