Óbidos in September: Weather, Crowds and a Two-Day Plan

ÓBIDOS · SEPTEMBER · PORTUGAL

September hands Óbidos a version of August with the edges filed off. The national weather service normal for the month is a high of 69.6°F and a low of 62.1°F, against August’s 70.2 and 63.0. Rain comes back, gently: 0.99 inches across 4.1 wet days, where August logs 0.42 inches over 1.8. The whitewashed lanes inside the walls, the ginjinha counters, the castle that is now a hotel, all of it stays open and mostly outdoors.

The bill arrives four weeks later. October drops the high to 67.3°F and multiplies the rainfall by more than three, to 3.33 inches over 9.2 wet days. So this is the last month that still behaves like summer while the daylight has started to shorten: 12 hours 29 minutes of it on the 15th, with the sun down at 19:47. Nearly every figure here comes from one coastal thermometer, and where that thermometer stands matters a good deal.

On this page

• Óbidos weather in September69.6°F, 0.99 inches, 4.1 wet days
• How warm it gets, day and nightThe 7.5°F swing, and no water figure
• Crowds and prices in SeptemberBooking lead time and the tax we cannot quote
• Things to do in Óbidos in SeptemberThe walls, Rua Direita, Santa Maria
• A two-day plan for the townTwo days set to a 07:18 sunrise
• September vs August and OctoberThree columns of IPMA normals
• Is September a good month here?Who should come, who should shift
• Everything else about the townThe Óbidos guide

One caveat before any of it. The town sits slightly inland, behind its walls, while the station that produced these normals stands on the coast at Peniche. IPMA’s own note is blunt about the limit: elsewhere in the region the figures differ, with high ground colder and much wetter. Read the normals below as the shape of the month across this stretch of the Oeste, not as a reading taken at your guesthouse door.

Óbidos weather in September: average highs, lows and rain days

Every figure here comes from IPMA, the Portuguese national weather service, and from a single instrument: station 531 at Cabo Carvoeiro, on the coast at Peniche, 32.0 m above sea level. That matters, because a real thermometer with a 1991–2020 record behind it is not the same thing as a model grid cell averaged over a landscape. For September it reads a mean daily high of 69.6°F (20.9°C), a mean low of 62.1°F (16.7°C) and 0.99 inches of rain.

That inch does not spread itself politely. IPMA counts 4.1 days in an average September reaching 0.04 inch, so roughly one day in seven gets wet, and 0.7 day reaching 0.39 inch, which puts a real soaking in most Septembers but not all of them. Watch the counting method: these are IPMA’s thresholds, not the 0.10-inch bar American tables use, so the numbers do not swap with the rain-day counts you read at home.

Pack for a day that starts near 62°F and tops out near 70°F. Short sleeves and one light layer cover almost everything, with something warmer for a dawn lap of the ramparts and for dinner at an outdoor table. The lanes under the wall stay in shadow well into the morning, so keep the layer on until the square is in full sun. A packable shell beats a coat at 0.99 inches for the month, and our packing guide has the rest.

September 15 brings 12 hours 29 minutes of daylight. Sunrise falls at 06:18 UTC and sunset at 18:47 UTC, which on Portuguese summer clocks means 07:18 and 19:47. That second time is the one to build a day around: the wall circuit still has usable light at 19:30, and an early dinner inside the gate starts in daylight rather than under a bulb.

How warm is Óbidos in September?

Warm here means 69.6°F in the afternoon and 62.1°F before dawn, a swing of 7.5°F from one end of the day to the other. That is a mild month by Iberian standards and a cool one by American ones, and it is an average, so plenty of individual days sit above and below it. As for the water, we found no sea-surface series we could verify for this stretch of coast, so we give no swim temperature at all.

In practice you dress twice. At eight in the morning on the ramparts it is a fleece or a light sweater over a shirt, with the stone still cold to the hand. By one in the afternoon that layer is in the bag and stays there through lunch. It comes back out somewhere around eight in the evening, which is roughly when the sun leaves the walls. Nobody needs a real coat in this month, and nobody gets through the evening without sleeves.

Frost is not part of the picture. IPMA’s September normals carry no frost-day count, so we quote none, and an average low of 62.1°F puts the month a long way from freezing. If your September plan includes the mountains inland, that is a different question with different numbers, and these coastal readings do not answer it.

How busy is Óbidos in September? Crowds, prices and the demand peak

With our cards on the table: we could not verify an occupancy series or a monthly room-rate series for Óbidos, so we crown no month cheap and no month expensive. What the calendar does say is that September sits between two very different months of weather, August at 0.6°F warmer and far drier, October at 3.33 inches of rain. For a town whose headline attraction is an open-air circuit of walls, that difference is the thing worth planning a trip cost around, and our budget guide handles the rest.

If you want a bed inside the gate rather than in the newer town below, book ahead: six to eight weeks out for a weekend, less midweek (est.), and that is our working estimate rather than a measured figure. The alternative is two nights in Lisbon or on the coast with a day trip up, an arrangement the where-to-stay guide sets out properly. Flight timing for the whole trip lives in our flights page.

Portugal’s municipal tourist taxes are set town by town, and we could not verify a rate for Óbidos, so we give no percentage and no per-night figure. Ask the property at booking whether it charges one at all and how it is billed. It is a small line either way, and it is the sort of thing a guesthouse answers by email in an hour.

The one upgrade that changes September specifically is that bed inside the walls. With sunrise at 07:18 and sunset at 19:47, the two best laps of the ramparts happen at hours no day-trip schedule covers. Pay for the address rather than the square footage. A room with a view of the valley is a pleasant extra, but the walk you take before breakfast is the reason to sleep up here.

Things to do in Óbidos in September

Nothing in September is unique to it, but the combination is useful: 4.1 wet days against October’s 9.2 means the ramparts, the streets and an outdoor lunch are available on roughly six days in seven, and the afternoon that delivers them runs at 69.6°F instead of August’s 70.2. Add 12 hours 29 minutes of daylight at mid-month and the day holds two separate outdoor sessions without anyone hurrying.

The circuit of the town walls is the main event, reached from beside the Porta da Vila, the tiled gate the road passes through, and with no handrail along much of its length. Rua Direita runs the length of the town from that gate to the castle, now a pousada hotel. Igreja de Santa Maria holds the blue-and-white tiled interior most visitors step inside for, and the Sanctuary of Senhor Jesus da Pedra stands outside the walls near the aqueduct. We could not verify current hours or admission for the churches and the municipal museum, so check on the day.

Stone does not change with the season, the air does, and that is the whole of what September alters here. The wall walk happens at 69.6°F rather than under high-summer sun, and a 19:47 sunset puts the entire circuit inside evening light with no headlamp involved. Come four weeks later and 9.2 wet days will close that evening slot on roughly one day in three.

Plenty of the town costs nothing: the wall circuit, the vestibule of the Porta da Vila with its azulejos, the full length of Rua Direita, the view over the valley from the ramparts. We could not verify admission prices for the ticketed sites, so build the day on the free list and treat the interiors as the bonus. Óbidos has also put bookshops into old buildings around town, which is the best indoor hour on a wet afternoon.

Óbidos in September: a two-day itinerary

Day one, be on the walls by eight, an hour after the 07:18 sunrise, with the air near 62°F and the lanes below still in shadow. Walk the full circuit, then drop to Rua Direita for coffee. Take Igreja de Santa Maria before noon and give the 69.6°F middle of the day to a long lunch and the quieter end of town. Out again at 18:30 for a second lap, sunset at 19:47, dinner after it. The ginjinha belongs to the evening, not the morning.

Day two goes outward. Peniche and the cape where that thermometer sits are a short drive west, Nazaré is up the coast, Lisbon is south, and the getting-around guide sorts the bus and car question. If the weather turns, and 4.1 days a month say it can, flip the order: interiors and bookshops first, walls at the first break in the cloud. Rain of 0.39 inch or more falls on 0.7 day in an average September, so a washed-out afternoon is plausible and a washed-out stay is not.

Óbidos in September vs August and October

Across the three months the air slides gently and the rain falls off a shelf. August to September costs 0.6°F on the daytime high and 0.9°F on the night low, while precipitation more than doubles, from 0.42 to 0.99 inches, and wet days go from 1.8 to 4.1. September to October costs another 2.3°F by day and 2.6°F at night, with rainfall multiplying by more than three to 3.33 inches over 9.2 wet days. No verified sea-temperature series exists for any of the three, so this comparison is air only.

Move four weeks earlier and you buy the driest of the three months and later light, at the price of high-summer company on a narrow main street: the August page has those numbers in full. Move four weeks later and you trade 2.3°F of afternoon and six extra wet days for a greener valley and a slower town, which the October page sets out. September is the middle term, and it leans toward August.

Is September a good time to visit Óbidos?

Yes, for anyone whose plan is walking: ramparts, cobbles, a coastal day out, dinner outdoors. A month that stays dry on roughly six days in seven and peaks at 69.6°F is close to ideal for that, and the evening light gives the walls back to you after the coaches leave. It is a weaker fit if the trip is built around swimming.

If the answer is no, shift earlier rather than later. August is drier by a clear margin, 1.8 wet days against 4.1, and gives up only 0.6°F of warmth in the other direction. October is the wrong move for anyone chasing dry weather: 3.33 inches and 9.2 wet days reshape what a two-day visit can actually contain. Our country-wide month guide places both in the Portuguese year.

What September alone holds, among these three, is the pairing of an August-grade afternoon, within 0.6°F of it, with the shorter fall daylight that makes a 19:30 rampart walk feel like an event rather than an errand.

The last word

Book the room inside the gate and stop optimizing. The numbers behind this month come from station 531 at Cabo Carvoeiro, a thermometer 32.0 m above the Atlantic on the headland at Peniche, the same headland that makes a good day two. It has been reading this month the same way since 1991: mild, mostly dry, gone before you are finished with it. Walk the circuit twice, once at eight and once at half past seven, and ask about the church hours at the door.

Sources & data for this guide

• September normals, high 69.6°F, low 62.1°F, 0.99 in, and the rain-day counts at 0.04 in and 0.39 in · IPMA (Instituto Português do Mar e da Atmosfera), 1991–2020 climate normals, station 531 Cabo Carvoeiro, 32.0 m · checked Sep 24, 2026
• August and October normals used in the comparison table · same IPMA 1991–2020 series, station 531 · checked Sep 24, 2026
• Station caveat: the readings are coastal, at Peniche, and IPMA notes that figures differ elsewhere in the region, with high ground colder and far wetter · checked Sep 24, 2026
• Daylight of 12 h 29 min, sunrise 06:18 UTC and sunset 18:47 UTC on September 15, converted to local time · sunrise-sunset.org · checked Sep 24, 2026
• Sea temperature: we found no series we could verify for this coast, so we give no water figure
• Occupancy, monthly room rates and any municipal tourist tax: we could not verify these, so we quote no price and rank no month
• Booking lead time is our estimate, marked (est.), not a measured figure
• Opening hours, admission and event dates change · confirm with the sites and the town before you go

To plan your stay

• Best Time to Visit Óbidos: Weather Month by Month, Quiet Months and Summer Heat
• Óbidos in August: Weather, Crowds and a Two-Day Plan
• Óbidos in October: Weather, Rain Days, Crowds and a Two-Day Plan
• Óbidos in July: Weather, Rain Days, Crowds and a Two-Day Itinerary

Nearby places

• Nazaré, Portugal: the Big-Wave Cliff, the Town Beach and Where to Stay
• Cascais, Portugal: the Town Beaches, Guincho and Where to Stay
• Ericeira, Portugal: the Surf Reserve, the Beaches by Level and Where to Stay