Lisbon Weather August Averages, Portugal

    Lisbon Weather for August 2023

    What's the weather like in Lisbon in August

    August is the warmest month of the year in Lisbon. 


    The average temperature reaches a very warm high of 28°C (that's about 82°F), and temperatures never drop any lower than 18°C (about 64°F), even at night. The lowest temperature ever in August was not too much lower than the average at 14°C. The high temperatures will almost never go below 26°C and at least one week a month temperatures hit 30°C or more.


    There is virtually no chance of rain, with the average being only around 6mm. Thunderstorms are rare in August in Lisbon. Two days a month you might see .1 inches of rain and 2 more days in the month there will be light showers that do not last long.

    Humidity in the mornings stays around 80%.  Evening relative humidity drops to 48%, with averages during the day at 65%. The dew point reaches 14 and like the rest of the summer months the air temperature feels very comfortable to the skin.

    Sunshine Hours

    There is about 11 hours of average daily sunshine with 14 hours of total daylight hours. You likely will not see any clouds for 85% of the day. The sun rises by 7 AM and sets close to 8 PM.

    The UV index reading is at 8 so pack plenty of sunscreen with high SPF ratings and wear good sunglasses that protect against the UV rays. Seek shelter from the sun during the hottest parts of the day - you can check the local weather forecast to find out when this is. If you are out and about sightseeing then drink plenty of water to stay hydrated and avoid sunstroke. 

    Sea Temperature

    The average sea temperature is about 20°C (about 68°F), so this a perfect time of year to head to the beaches, famous for their surfing, or the many surrounding golf courses. Dominant wind direction is southeast with average speeds of 12 mph. The Wind probability on the Beaufort scale is 40, so surfing is still very good in August.

    Lisbon Hotels for August

    Sana Capitol Hotel

    The Coracao de Jesus area has excellent hotel choices along with a good city location. The Sana Capitol Hotel is a modern facility by Marques de Pombal Square. Very close to the airport, which is only a quarter mile away, the nearby metro station will take you to wherever you want to go in the city.

    Hotel Aviz

    Hotel Aviz has had a very famous cliental throughout the years including Frank Sinatra and Eva Peron. It too is by the Marques de Pombal Square. There are suites and private rooms to choose from and the hotel has a spa.

    Myriad by Sana Hotels

    The Myriad by Sana Hotels is right by the Tagus River and Vasco da Gama Bridge. The views are spectacular. The bar has live entertainment nightly and there is a very large indoor pool with spa facilities.

    Tryp Lisboa Aeroporto Hotel

    Staying at the airport is not a bad decision as the public transportation options to get you to where you want to go in the city are good. The Tryp Lisboa Aeroporto Hotel has good prices and excellent facilities. There is a buffet breakfast and a bar, and the Aeroporto Metro Station is five minutes away.

    Guesthouse Torel Palace

    The Guesthouse Torel Palace is a fabulous property with a pool, gardens and breathtaking city and river views. The 19th century mansion is completely refurbished. There are only 10 bedrooms and a villa available. The hotel staff specializes in personalized service for guests and can provide just about anything you could ask for.

    Altis Suites

    Altis Suites is a all-condos 4-star property with large apartments containing full kitchens, bathrooms and private balconies. The Hotel adjacent has a buffet breakfast and great dining options to which all Altis Suite guests have access. There is also a heated pool and other amenities.

    Hotel Botanico

    Hotel Botanico near Avenida da Liberdade and the University's Botanical Gardens has a great location with easy access to all parts of the city. All rooms have air conditioning, TVs and private baths. A full breakfast is offered each morning and there is a nice lounge with a great local wine selection. The airport is only five minutes away.

    Lisbon Beaches in August

    Ribeira d'Illhas

    Ribeira d'Illhas hosts the world surfing championships every year. There is a car park, plenty of bars and it is open year-round.

    Praia do Sul

    Another surfer paradise by Lisbon is the Praia do Sul. Very close to the town centre, there are plenty of places to eat and even a hotel nearby.

    Bars and Restaurants

    The Open

    Mediterranean cooking is the fare served at The Open on Rua Santa Marta in the heart of the city. Modern and contemporary, reservations will be needed.

    The Blube do Peixe

    The Blube do Peixe is another Michelin star restaurant near the Jardim do Camp Pequeno. Great seafood and a maritime themed atmosphere is found inside.


    There are plenty of beef and steak restaurants in Lisbon too. One that is very reasonably priced  and serving large portions is the Slagadeiras by the Chado-Baixa metro. Service too is considered exceptional.

    Casa Nepalesa

    For something exotic try the Casa Nepalesa. Nepalese food is their forte. It is popular and gets heavily booked so make reservations if you crave something different for dinner.


    At the Grei you can also find seafood and meat dishes. Locals frequent this very posh restaurant with tasteful modern decorations. The menu is not extensive but sufficient.

    Tasca Kome

    For Japanese, try the Tasca Kome. A bit off the beaten track though in downtown Lisbon, visitors familiar with Japanese dining will enjoy the sushi, draft Kirin Ichiban, and the sake.

    O Policia

    O Policia has been around since at least the late 18th century. Simple with great Old World cuisine, it can be found near the Hospital De Santa maria and the Fundaco Clouste Gulbenkian Gallery and Museum.

    Things to do in Lisbon in August

    Jardim do Casino

    For music lovers, the Jazz in August festival sees a variety of outdoor concerts take place at Gulbenkian Gardens and surrounding places. And Lisbon's answer to Crufts, the Estoril Coast International Canine Expo at the Estoril Casino Gardens, or Jardim do Casino, is an international dog show.

    Castle of the Moors

    Located in the Parques de Sintra, the Castle of the Moors is a very interesting historical site, built in the 10th century by the Moorish invaders. There are lots of other things to do at this park including horse riding and carriage tours, walking tours and musical events.

    Palace of the Marquises

    The Palace of the Marquises is a beautiful, elegant period home with beautiful gardens and very interesting architecture.

    Portuguese Nature Trails

    If you like bike riding and nature, the Portuguese Nature Trails provides very unique customized tours around Lisbon and elsewhere.

    Pena Park

    Pena Park in Sintra with its romantic gardens and walking paths is worth a visit. Cost of entry is only 7 euros per person.

    Santa Justa Elevator

    The views from the steam-powered Santa Justa Elevator are phenomenal. Over 100 years old, it is located in the Barrio Alto neighbourhood.

    Belem Tower

    Belem Tower was built on the banks of the Tagus River and was supposed to be the gateway to the city at the time. A great place to view at night with the lights of the city of Lisbon as a backdrop.

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