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Oeiras Climate by Month

The graphs below provide an overview of the climate in Oeiras (Lisbon Region), Portugal. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for Oeiras

Fri   Nov 15
17°C | 12°C
E 25 km/h
7.9 mm
broken clouds and rain

broken clouds and rain

Sat   Nov 16
21°C | 14°C
E 25 km/h
8.5 mm
broken clouds and slight rain

broken clouds and slight rain

Sun   Nov 17
21°C | 13°C
E 18 km/h
almost clear and no rain

almost clear and no rain

The best time of year to visit Oeiras in Portugal

During the months of June, July, August, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Does Oeiras have a dry season?
    Yes, the months of June, July and August are very dry.
  • Which is the warmest month in Oeiras?
    August has an average maximum temperature of 24°C and is the warmest month of the year.
  • Which is the coldest month in Oeiras?
    The coldest month is January with an average maximum temperature of 15°C.
  • Which is the wettest month in Oeiras?
    November tops the wettest month list with 91 mm of rainfall.
  • Which is the driest month in Oeiras?
    July is the driest month with 3 mm of precipitation.
  • Which is the sunniest month in Oeiras?
    July is the sunniest month with an average of 385 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.