When I think about the best places to surf in September, I look for the overlap between two seasons. Summer crowds are beginning to thin in parts of Europe and California, but the water is still relatively warm. In the tropics, a few major surf seasons are still running before the winds and rain begin to shift. It is a month when choosing the right coast matters more than choosing the most famous country.
Portugal is my best overall pick because it gives you the widest range of waves and the best chance of adjusting when conditions change. Bali, Arugam Bay, Siargao, southwest France, Southern California, and Nicaragua all make sense too, but for different surfers. I would choose between them based on wave shape, skill level, rain tolerance, and whether I wanted a relaxed longboard trip or more serious surf.
Best Places to Surf in September: The Short Answer
- Portugal: best overall mix of swell, weather, and wave variety
- Bali: best for reliable dry-season surf and reef options
- Arugam Bay, Sri Lanka: best for warm water and long right-hand points
- Siargao, Philippines: best for tropical reef variety and stronger surfers
- Southwest France and northern Spain: best for powerful early-autumn Atlantic surf
- Southern California: best close-to-home option for longboarders
- Nicaragua: best if consistent Pacific swell matters more than dry weather
Portugal Is My Best Overall September Pick
If I had one September surf trip to book, I would start with Portugal. The first autumn swells begin to reach the Atlantic coast, the weather can still feel like summer, and you are not locked into one type of wave. That flexibility is what makes Portugal more useful than a destination built around a single break.
Peniche is the practical choice because the peninsula faces several directions. If one beach is blown out or too large, another side may be manageable. Ericeira is the better fit if you want a handsome surf town and access to reefs and points, although many of its better-known waves demand confidence. My guides to surfing in Peniche and surfing in Ericeira go deeper into that choice.
The tradeoffs are cold Atlantic water, changing conditions, and serious lineups when the good reefs switch on. Bring a wetsuit and do not assume a beautiful forecast means mellow surf. The official Portugal tourism surfing guide is useful for comparing its different stretches of coast.
Bali at the Tail End of Dry Season
September is one of the months I would choose for surfing in Bali. The west coast and Bukit Peninsula are still in their main dry-season window, but the trip can feel slightly less intense than July or August. You still have a strong chance of clean Indian Ocean swell without aiming for the absolute peak of the season.
Bali works best for surfers who value options and are willing to move. The Bukit reefs suit experienced surfers. Kuta is easier for lessons and sand-bottom practice. Canggu offers a mix, but crowd pressure can erase some of the laid-back feeling people imagine before arriving.
For a longboard trip, I would not build the entire plan around the famous reef names. I would look for smaller days and read the longboard waves in Bali guide before deciding where to stay. September can be a good compromise for an intermediate surfer who wants real waves without chasing the heaviest part of the dry season.
Arugam Bay for Long, Warm-Water Rights
On Sri Lanka’s east coast, September is late in the main Arugam Bay season. That makes it appealing if you want tropical water, right-hand points, and a surf trip that leaves room for wildlife, food, and slow travel. The wave at Main Point can be crowded and more demanding than the town’s easygoing image suggests, but the wider area has several points with different levels of consequence.
For longboarders and improving surfers, the softer nearby options are more interesting than forcing a session at the most famous peak. Peanut Farm, Elephant Rock, and Whiskey Point can all be useful depending on swell, tide, and sand. None should be treated as automatically safe, so I would still ask locally before paddling out.
Read my full guide to surfing in Arugam Bay and the breakdown of the best time to surf in Sri Lanka. The big planning mistake is booking the southwest coast out of habit. In September, the east coast is usually the side I would investigate first.
Siargao When You Want More Than One Reef
September brings more swell energy to Siargao and can produce some of the island’s best-known conditions. Cloud 9 gets the attention, but it is fast, shallow, and built for experienced surfers. I would not use it as proof that Siargao is the right destination for every ability level.
The reason to choose Siargao is its network of reefs and boat-access waves. A local guide can match the day’s swell and tide to your board. Longboarders should ask specifically for a softer, deeper-water setup rather than a performance reef.
September also sits within a storm-prone part of the year, so flexibility matters. Build spare days into the trip and avoid a tight schedule of separate flights and ferries. My guide to surfing in Siargao covers the island in more detail, while the Philippines surf-season guide helps put September in context.
The Atlantic Wakes Up in France and Northern Spain
Southwest France and northern Spain are my pick for surfers who want September to feel like the beginning of autumn, not an extension of a tropical holiday. Atlantic groundswell becomes more regular, while the weather can still be pleasant enough for long beach days. When the banks line up, the quality can be exceptional.
Hossegor is the high-performance choice. Its beach breaks can be hollow, powerful, and unforgiving, so I would not recommend it simply because the town is famous. Biarritz offers a broader mix of waves and a more rounded trip. Across the border, the San Sebastián area gives you city life, food, and access to Zurriola, although local conditions and crowds still decide whether it is a good session.
Start with the guides to surfing in Hossegor and surfing in San Sebastián. I would choose this region over Portugal only if punchier surf and the culture around the trip mattered more than maximizing the number of backup beaches.
Southern California Gets a Useful Seasonal Overlap
September is a useful Southern California overlap: summer south swells can still arrive while early northwest energy begins to appear. The water is also near its warmest point of the year, and more stretches of coast have a chance to work.
San Diego is the easiest base if you want variety without rebuilding the trip every day. Longboarders can look toward slower reefs and beaches, while stronger surfers can respond to whatever swell direction shows up. Crowds remain the obvious drawback, and morning wind windows still matter.
If this is the most realistic trip for you, compare the best longboard surf spots in San Diego with my guide to the best time to surf in San Diego. September is not empty or cheap, but it is a strong choice when you want good odds without an international flight.
Nicaragua Is for Surfers Who Can Accept Rain
Nicaragua still receives consistent south swell in September, and southern areas can benefit from the offshore wind pattern created by Lake Nicaragua. The appeal is simple: warm water, surf-focused lodging, and enough wave variety to build a trip around daily sessions.
The tradeoff is that September falls in the wet season. Heavy rain can affect roads, river crossings, and the mood of a trip. I would choose it if wave consistency and value mattered more than blue-sky weather. I would not choose it for a first visit with a non-surfing partner who expects easy beach days.
Popoyo and Colorados suit confident surfers when there is size. Remanso and some smaller-day options make more sense if the goal is wave count on a longer board. The broader Nicaragua surf guide is the best place to start, followed by my guide to the best longboard waves in Nicaragua.
The September Mistake I Would Avoid
I would not book around one famous wave. September is transitional, and swell direction, local wind, storms, and sandbars can change the plan quickly. A base with several nearby breaks is usually worth more than a room directly in front of one photogenic peak.
Portugal is still my first choice because Peniche, Ericeira, and the Lisbon coast give you room to adapt. If warm water mattered more, I would choose Arugam Bay for softer right-hand points or Bali for more range. Before settling on one country, browse the Longboard Waves hub or compare the full collection of surf destinations.
If your dates are flexible, compare these picks with the best places to surf in August. Moving a trip by a few weeks can change the crowds and weather even when the destination stays the same.