Surf forecastSpot statisticsHistorical report

Nazare seasonal overview

Best Surf Season (October - March)

The North Atlantic roars to life during these months, delivering consistent, powerful swell from the W to WNW bands. Average wave heights range from 2.1 to 2.4 m with periods climbing into the 12-13 s range, often feeding the Nazare canyon with long-period groundswell. Offshore winds from the E/NE quadrant blow cleanly across the face 46-52% of the time, sculpting the waves into hollow, ridable gems. This is when the spot truly lives up to its big-wave reputation.

Fair Surf Season (April & September)

These shoulder months see a transition in the North Atlantic storm track. April still harvests moderate swell (1.8 m avg, 11.2 s) with a mix of W and NW energy, but offshore wind reliability drops to 37%. September offers a refreshing uptick after summer, with average swell climbing back to 1.5 m and period to 10.5 s, plus a solid 45% ideal wind frequency. Both months can produce fun, rippable sessions, especially when a late-season low or early autumn depression aligns with a light east wind.

Low Surf Season (May - August)

Summer settles in with a persistent ridge of high pressure over the Azores, suppressing storm activity across the North Atlantic. Swell heights drop to 1.3-1.5 m, periods shorten to 8.7-10.0 s, and the wind rarely swings offshore — ideal wind percentages languish between 30-37%. The dominant swell direction shifts to NW and NNW, which wrap into the bay with less power and often get chopped by the prevailing northerly wind. It's a time for small-wave gear and patience; the rare easterly breeze can salvage a marginal day.

Loading chart...

Conditions at Nazare in December

December: Full Winter Mode

December is the consistent winter powerhouse. Average swell height is 2.3 m, average period 12.7 s, and offshore wind reliability ties with January at 52%. Swell direction is dominated by NW (24.1%), WNW (20.6%), and W (8.0%), with a significant 3.4% from WSW. The wind pattern shows a strong easterly component — ESE (13.7%), SE (8.7%), E (8.1%) — providing excellent offshore conditions for the west-facing beach. Frequent deep extratropical cyclones generate XL swell, and the Nazare canyon does its magic. When the wind clocks around to the E/NE and the swell fills in from the W-WNW, expect heavy, grinding, XXL waves. This is the month that defines Nazare’s big-wave legend. Plan your trip accordingly.

Average Spot conditions at Nazare in December

Swell history for December

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for December

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Nazare during December. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Nazare for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Nazare for December. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Nazare.

Swell with good wind

Swell with good wind by size