Lisbon in October: Weather Normals, Sea Temperature, Ticket Prices and a Two-Day Plan

LISBON · OCTOBER · 38.7° N

October is the month Lisbon stops sweating. The national weather service puts the average high at 72.7°F (22.6°C) and the average low at 58.8°F (14.9°C), which is 7.5 degrees off September’s daytime figure and 9 above November’s. Terrace lunches still work. The climb from Baixa up to the castle no longer punishes you for attempting it at one in the afternoon.

What the month takes back is the dry sky. Rainfall goes from 1.41 inches in September to 4.05 inches, and wet days from 3.7 to 8.3. Daylight is down to about 11 hours 14 minutes by the 15th. This is the hinge month: still shirt-sleeve warm at noon, already wet enough that a two-day plan needs an indoor half-day held in reserve.

On this page

• Average highs, lows and rain daysThe IPMA normals, 72.7°F and 8.3 wet days
• Can you swim in Lisbon in October?Sea at 66.3°F, measured as daily maxima
• Booking, tourist tax and what the month costsSell-out rules, fares and the tax we could not verify
• Opening hours and ticket pricesJerónimos, Belém Tower, Oceanário, Gulbenkian
• A two-day plan around 11h14m of daylightDay one and day two, hour by hour
• October vs September and NovemberThe three-month table, temperature, rain and sea
• Is October a good time to visit Lisbon?Who should shift the dates, and to which month

Every temperature here comes from one hilltop instrument rather than a model grid cell, and the sea number is an average of daily maxima. Anything that is not dated by the month belongs elsewhere: the neighborhood choice sits in where to stay, the wider calendar in when to visit Portugal.

Lisbon weather in October: average highs, lows and rain days

Those normals are IPMA’s, the Portuguese institute for the sea and the atmosphere, 1991–2020 series, station 579 at Lisboa Gago Coutinho. The thermometer stands 103.9 m above sea level on the eastern side of the city, and that address matters: every figure here is an instrument reading, not a reanalysis cell averaged over several miles of river, hillside and runway. Riverside Belém on a sunny afternoon runs a shade warmer than the station reports.

On the rain side, 8.3 days in an average October collect at least 1 mm (0.04 inch) and 2.8 of them reach 10 mm (0.39 inch). Watch the threshold before you compare: American monthly tables usually count days at 0.10 inch, so the two sets of numbers are not interchangeable. Practically, about three days in four stay dry, and a third of the wet ones carry the heavy end of the total, which is what turns a passing shower into a written-off afternoon.

Day and night are 13.9°F apart, and the drop arrives fast once the sun is off the river. A cotton shirt that felt right at 2 pm is thin at 9 pm on a miradouro. Pack one warm layer, a shell rather than an umbrella (the Tagus wind kills umbrellas), and shoes with real grip: wet calçada paving is the month’s most reliable hazard. Our Portugal packing list takes the full inventory.

Light is the other budget item. On October 15 the sun rises at 7:45 am and sets at 6:59 pm Lisbon time, 11 hours 14 minutes between the two, converted from 06:45 and 17:59 UTC by sunrise-sunset.org. That puts the miradouro hour at roughly 6:00 to 7:00 pm (est.), and it means a 5 pm ticket at any monument is your last outdoor act of the day.

Can you swim in Lisbon in October? Sea temperature and what it feels like

The sea surface off Lisbon averages 66.3°F (19.1°C) in October, taken from the Open-Meteo Marine series as the mean of daily maxima over 2015–2024. That distinction is worth carrying: a mean of daily peaks sits a shade above a true 24-hour average, so the water you meet at 8 am will read lower than 66.3°F, and the number flatters an early swim more than a late-afternoon one.

At that temperature the Atlantic is swimmable, not comfortable. Expect a sharp first thirty seconds, twenty good minutes, and a real need for a towel and a windbreak afterward. Curiously, October water is warmer than September’s 64.7°F on the same series, the ocean lagging the air by weeks. The Cascais line reaches Carcavelos and Cascais in half an hour, and the 24-hour Carris/Metro ticket that includes CP suburban trains costs EUR 11.40.

On wind and swell, our sources carry nothing month-specific for October, and no figure gets invented to fill the gap. One official line does hint at the exposure: Belém Tower states that it can close whenever visitor safety is compromised by the weather. Treat that as the practical marker for an Atlantic-facing day, and check the tower’s status before making it the anchor of your morning.

How busy is Lisbon in October? Crowds, prices and the demand peak

We could not verify a month-by-month price series for Lisbon rooms, so no index is served here and no percentage invented. What is public and dated is the fare sheet: the Metropolitano and Carris tariffs in force since January 1, 2026 apply all month, a single Carris/Metro ticket on a navegante card costing EUR 1.90. For the country-wide budget picture, what a Portugal trip costs does the arithmetic.

Booking pressure shows up at the monuments rather than in a chart. Jerónimos states plainly that its tickets should be bought online because they frequently sell out and cannot then be purchased on the day of the visit. Two weeks ahead is cheap insurance for a fall Saturday (est.). The Oceanário sells by time slot and takes 5 percent off online purchases, and the Gulbenkian closes every Tuesday, which quietly removes one indoor option from a rainy week.

Lisbon also levies a municipal tourist tax per night on top of the room rate, and we cannot give you the amount. The city’s information portal returns a 403 to automated reading and the Diário da República requires JavaScript, so both primary sources refused us on September 8, 2026. Rather than repeat a figure from a secondary site, we leave it blank: ask your property to state the per-night amount in writing before you pay.

The one line where spending more genuinely changes an October day is transport. A 24-hour Carris/Metro ticket is EUR 7.25 against EUR 1.90 per single ride, so it pays from the fourth journey. On a wet day you will ride instead of walk, and paying the driver is punishing: EUR 2.30 on a bus, EUR 3.30 on a tram (28 included), EUR 4.30 on a funicular for up to two rides, EUR 6.20 on the Santa Justa lift.

Things to do in Lisbon in October

At an average high of 72.7°F, October is the month the hills become an asset rather than a tax. September’s 80.2°F afternoons make the Alfama climb a negotiation; this month you can do the castle, the miradouro circuit and a full Sintra day, with its uphill palace park, on the same pair of legs. The trade is light: your walking window closes at 6:59 pm.

For the named list with its numbers: the Jerónimos cloister costs EUR 18, opens Tuesday to Sunday 09:30 to 17:30 with last entry at 17:00, gives no audio guides, and its church keeps separate hours (Tuesday to Saturday 10:30 to 17:00, Sundays from 14:00). Belém Tower is EUR 15. The Oceanário runs 10:00 to 20:00, last entry 19:00, at EUR 29 in the 10:00–11:30 slot and EUR 25 from 16:00. The Gulbenkian asks EUR 18 all inclusive, Wednesday to Monday, 10:00 to 18:00.

Free is narrower than the internet claims. The Acesso 52 waiver at Jerónimos and Belém Tower covers Portuguese nationals and residents in Portugal, on any day: an American visitor pays full fare whatever the hour, and the widely repeated “free Sunday morning until 2 pm” does not apply to you. At the Gulbenkian, Sundays from 14:00 are free for under-18s and specific cardholders, Saturdays 18:00 to 21:00 for under-30s carrying the free Cartão Gulbenkian. The miradouros, as ever, cost nothing.

Lisbon in October: a two-day itinerary

Day one, Belém and the river. Sunrise is 7:45 am, so leave the room at 8:30 rather than at dawn. Be at the Jerónimos cloister for the 09:30 opening with a ticket already bought, then the church from 10:30, then Belém Tower (EUR 15) before the wind picks up. Lunch late, walk the riverfront back toward Cais do Sodré through the warmest hours, and take a miradouro at 6:15 pm for the last of the light.

Day two, the hills and one indoor anchor. Alfama early, tram 28 with a loaded navegante card at EUR 1.90 instead of EUR 3.30 on board, castle by mid-morning, long lunch in Baixa. Keep the afternoon flexible: the Gulbenkian until 18:00, or the Oceanário’s EUR 25 slot from 16:00, which fills the one and a half to two hours it asks for. If the rain arrives as one of those 2.8 heavy days, swap the whole morning indoors and remember Tuesday closes the Gulbenkian.

Lisbon in October vs September and November

Read the rain row first. September to October nearly triples the total, from 1.41 to 4.05 inches, and more than doubles the wet-day count. October to November adds only 0.46 inch and one further wet day, but strips 9°F off the afternoon. The sea moves the other way: 66.3°F in October is the warmest of the three, 1.6 degrees above September and 2.6 above November, because the water lags the air by a season.

Shift four weeks earlier and you buy dry afternoons and warm evenings, at the cost of a hotter climb and slightly cooler water: September in Lisbon lays out the trade. Shift four weeks later and you keep almost the same rainfall while losing the terrace, the swim and an hour of light, which is the case November in Lisbon has to answer for.

Is October a good time to visit Lisbon?

Yes, for walkers, eaters and museum people. A 72.7°F afternoon is the right temperature for a city built on hills, the crowds thin from their summer shape, and the indoor options are open long enough to absorb a soaked day. No, if the beach is the reason for the trip: 8.3 wet days and a sea that asks for grit rather than pleasure make a poor foundation for a week of towels.

Beach-first travelers should move to September, where 3.7 wet days and 1.41 inches of rain give five clear days for every wet one, and accept 80.2°F on the climbs. Moving later solves nothing: November keeps the rain, loses the warmth and closes the light before 6 pm. If flexibility runs the other way, the Algarve holds warmth longer than the capital, and the national calendar sorts that out region by region.

What no other month on this table delivers: the year’s warmest water at 66.3°F sitting under afternoons that stay below 73°F, so the swim and the seven-hill walk can happen on the same day.

The last word

Book the monument tickets, leave the afternoons loose, and treat the 8.3 wet days as a scheduling fact rather than bad luck. One last piece of arithmetic for the arrival: the reusable navegante occasional card costs EUR 0.50 and reloads for a year, a metro ride from a zapping balance is EUR 1.72 against EUR 1.92 tapping your own bank card, and zapping loads only in fixed steps of EUR 3, 5, 10 and upward to 40. Buy the card at the airport machine, load EUR 10, and October stops charging you for improvisation.

Sources & data for this guide

• October, September and November normals (highs, lows, precipitation, wet days) · IPMA, climatological normals 1991–2020, station 579 Lisboa Gago Coutinho, altitude 103.9 m · checked Sep 10, 2026
• Sea surface 66.3°F, mean of daily maxima 2015–2024 · Open-Meteo Marine API · checked Sep 10, 2026
• Daylight 11h 14m, sunrise 06:45 UTC and sunset 17:59 UTC on October 15, converted to Europe/Lisbon · sunrise-sunset.org · checked Sep 10, 2026
• Fares: EUR 1.90 Carris/Metro ticket, EUR 0.50 navegante card, EUR 1.72 zapping and EUR 1.92 contactless on the metro, EUR 7.25 / 10.35 / 11.40 day tickets · Metropolitano de Lisboa, Tarifas 2026 (PDF), in force since January 1, 2026 · checked Sep 10, 2026
• On-board fares EUR 2.30 bus, EUR 3.30 tram, EUR 4.30 funicular, EUR 6.20 Santa Justa · Carris, Novo Tarifário 2026 · checked Sep 10, 2026
• Jerónimos EUR 18, hours, Monday closure, no audio guides, online sell-outs, Acesso 52 eligibility · Mosteiro dos Jerónimos official site, Visitar · checked Sep 10, 2026 · several online guides wrongly advertise a free Sunday morning for all visitors
• Belém Tower EUR 15 and weather closures · Torre de Belém official site, Visitar · checked Sep 10, 2026
• Oceanário time-slot prices, 10:00–20:00 hours, last entry 19:00, 5 percent online · Oceanário de Lisboa, Tickets · checked Sep 10, 2026
• Gulbenkian EUR 18 / 16 / 12 / 8, Wednesday to Monday 10:00–18:00, free windows · Fundação Calouste Gulbenkian, Tickets and Opening hours · checked Sep 10, 2026
• Municipal tourist tax: amount NOT served. The city information portal returned a 403 and the Diário da República requires JavaScript · attempted Sept 8, 2026
• Itineraries, packing advice and the two-week-ahead booking suggestion are editorial; hours and fares change · confirm with each operator when you book.

To plan your stay

• Things to Do in Lisbon: Prices, Free Highlights and What to Skip
• Where to Stay in Lisbon: 8 Neighborhoods Compared, With Prices and Trade-offs
• Lisbon Airport to the City Center: Metro, Taxis, Ride-Hailing and Departure-Day Timing
• Things to Know Before Going to Lisbon: Hills, Tram 28, Miradouros and Late Dinner Tables

Nearby places

• Cascais, Portugal: the Town Beaches, Guincho and Where to Stay
• Ericeira, Portugal: the Surf Reserve, the Beaches by Level and Where to Stay
• Sintra, Portugal: Pena, Regaleira, Tickets and the One-Day Plan