- Temperature
- Feels like
- Rain
- Wind
- Sea water
- Waves
- Updated
Right now in Castelo do Neiva: clear skies, 16°C, feels like 17°C.
Expect a mostly clear week in Castelo do Neiva, with temperatures staying fairly steady between 12°C and 23°C.
Daytime highs this week are about 2°C above the October average of 20°C.
Sunrise: 07:44 · Sunset: 18:59 · Day length: 11h 15m
Sea water: 16.4°C, cooling slightly to around 15°C over the coming days
Wave height: 1.3m (min 1.1m on 2026-10-18, max 1.4m on 2026-10-16)
Castelo do Neiva water temperature for the next 7 days · Sea temperature along the whole coast
Castelo do Neiva is a quiet parish on the coast just south of Viana do Castelo, with a small fishing beach and the wider sands of Amorosa a short way north. There is no resort here, only a village, a few restaurants and a long stretch of dune-backed coast that stays empty even in August. People come for the space rather than the facilities.
Summers are moderate at 20–24 °C, with grey mornings that usually clear and a northerly wind after lunch. Winter is mild at 13–15 °C with regular rain. The sea is cold, holding around 15–17 °C through summer, because upwelling on the Minho coast runs at full strength for most of the season.
| Month | Min (°C) | Max (°C) | Rainy days |
|---|---|---|---|
| January | 8.3 | 13.7 | 14.1 |
| February | 8.9 | 14.7 | 11.6 |
| March | 9.2 | 15.4 | 14.7 |
| April | 11.1 | 17.2 | 13.0 |
| May | 13.3 | 19.5 | 10.8 |
| June | 15.4 | 21.1 | 8.9 |
| July | 17.1 | 23.6 | 3.3 |
| August | 17.0 | 23.6 | 3.7 |
| September | 16.0 | 22.2 | 7.6 |
| October | 14.2 | 20.0 | 13.6 |
| November | 11.3 | 16.4 | 15.8 |
| December | 9.6 | 14.7 | 16.2 |
Going by Castelo do Neiva's own averages, July is both the warmest and the most balanced month: highs near 24 °C and about 3 rainy days. The wettest is December with 16 rainy days.
Averages for 2016–2025. A rainy day is one with at least 1 mm of precipitation.
In late August and September, when the water may reach 16–18 °C. This is among the coldest sea in mainland Portugal and it stays that way through the hottest weeks. Anyone planning to stay in longer than a quick dip should have a wetsuit.
Low key and uncrowded. The beach at the village is small and still used by fishing boats, while Amorosa to the north gives a much longer stretch of sand with dunes behind it. Facilities are limited, so bring what you need for the day.
It is about fifteen minutes by car south of Viana do Castelo on the coast road, and the Porto to Viana railway line has a station in the parish, a short walk or drive from the sea. Parking near the beach is easy outside the peak fortnight in August.