Portimão, Algarve at a glance
- Best time
- Jun – Sep
- Warmest month
- Aug · 30°
- Warmest sea
- Sep · 19.9°
- Sunshine a year
- 3,270 h
- Rain a year
- 471 mm
- Climate
- Mediterranean
- Time zone
- UTC+0 / UTC+1
- Elevation
- 13 m
Climate in Portimão, Algarve
Portimão, Algarve has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. August is the warmest month with average highs of 30 °C, while January is the coolest at 16 °C. With around 3,270 hours of sunshine a year, Portimão, Algarve is very sunny; July is the sunniest month with 12.2 hours a day.
Weather in October
Holiday weather in October
Good
Best time to visit: June – September
What is the weather like in Portimão, Algarve in October?
In October, Portimão, Algarve is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 19.6 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 65 mm. All in all, October is a good month for a holiday in Portimão, Algarve.
More details for October
- Daylight
- 11 h 18 min07:41 – 18:59
- UV index
- 5 · moderateclear sky, noon (estimate)
- Muggy days
- 1 daydew point 18 °C or more
- Wind
- 20 km/haverage daily peak
- Cloud cover
- 48 %on average
- Hot days
- 1 day30 °C or more
- Time zone
- UTC+1Europe/Lisbon
How the score comes together
- Temperatureweight 35 %77 %
- Seaweight 25 %37 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %71 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Wetsuit for longer swims
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Sea temperature in Portimão, Algarve
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 18.0 – 21.1 °C
Swimming season: Never above 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Portimão, Algarve ranges from 15.3 °C in February to 19.9 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in September, while the air already peaks in August. From December to January the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in September, eight out of ten years were between 18.6 and 21.4 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 16.0° | 15.3° | 16.8° | cold |
| FebruaryFeb | 15.3° | 14.4° | 16.1° | cold |
| MarchMar | 15.3° | 14.7° | 16.0° | cold |
| AprilApr | 16.1° | 15.3° | 17.1° | cold |
| MayMay | 17.0° | 16.2° | 17.8° | fresh |
| JuneJun | 18.6° | 17.3° | 20.4° | fresh |
| JulyJul | 19.2° | 18.0° | 20.4° | fresh |
| AugustAug | 19.7° | 17.7° | 21.2° | fresh |
| SeptemberSep | 19.9° | 18.6° | 21.4° | fresh |
| OctoberOct | 19.6° | 18.0° | 21.1° | fresh |
| NovemberNov | 18.2° | 16.9° | 19.4° | fresh |
| DecemberDec | 16.9° | 15.9° | 17.7° | cold |
Sunshine hours in Portimão, Algarve
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 7.8 of 11.3 hours of daylight in Portimão, Algarve, 69 % of the day.
Sunshine hours count the time with bright, direct sunshine (WMO definition, estimated from model data); daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Portimão, Algarve: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Portimão, Algarve has about 8 rainy days with 65 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 26 | 16° | 9° | 16.0° | 6.5 h | 8 | 57 |
| FebruaryFeb | 31 | 17° | 9° | 15.3° | 7.5 h | 7 | 49 |
| MarchMar | 31 | 19° | 11° | 15.3° | 8.3 h | 9 | 64 |
| AprilApr | 42 | 20° | 12° | 16.1° | 9.3 h | 8 | 43 |
| MayMay | 66 | 24° | 14° | 17.0° | 10.3 h | 5 | 26 |
| JuneJun | 81 | 28° | 17° | 18.6° | 11.8 h | 2 | 6 |
| JulyJul | 83 | 30° | 19° | 19.2° | 12.2 h | 0 | 1 |
| AugustAug | 85 | 30° | 19° | 19.7° | 11.2 h | 0 | 2 |
| SeptemberSep | 85 | 27° | 18° | 19.9° | 9.7 h | 3 | 21 |
| OctoberOct | 66 | 24° | 16° | 19.6° | 7.8 h | 8 | 65 |
| NovemberNov | 30 | 19° | 12° | 18.2° | 6.8 h | 9 | 63 |
| DecemberDec | 24 | 16° | 10° | 16.9° | 6.1 h | 9 | 74 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)
37.14° N, 8.54° W · 13 m · Europe/Lisbon
Best time to visit Portimão, Algarve
The best time to visit Portimão, Algarve is from June to September. The sea stays too cool for a classic beach holiday: even in September it only reaches 19.9 °C. For sightseeing, day trips and hiking, conditions are most comfortable from September to June. The wettest month is December with 74 mm of precipitation.
Find your perfect month
Tell us what you like and we rate every month in Portimão, Algarve for you.
Your best months: June, August – September
Based on the climate averages; tap a month to see its details.
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Sep – Jun
15–28 °C and not too much rain
Portimão, Algarve month by month
The typical weather for every month at a glance.
26January16° · Sea 16° · 7 h
In January, Portimão, Algarve is cool: daytime highs average 16 °C, and nights cool down to about 9 °C. The sea averages 16.0 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 57 mm. All in all, January is not an ideal month for a holiday in Portimão, Algarve.
Portimão, Algarve in January31February17° · Sea 15° · 8 h
In February, Portimão, Algarve is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sea averages 15.3 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 49 mm. All in all, February is not an ideal month for a holiday in Portimão, Algarve.
Portimão, Algarve in February31March19° · Sea 15° · 8 h
In March, Portimão, Algarve is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 15.3 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 9 days, adding up to 64 mm. All in all, March is not an ideal month for a holiday in Portimão, Algarve.
Portimão, Algarve in March42April20° · Sea 16° · 9 h
In April, Portimão, Algarve is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. The sea averages 16.1 °C – swimming is only for the hardy. With around 9 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 43 mm. All in all, April is a so-so month for a holiday in Portimão, Algarve.
Portimão, Algarve in April66May24° · Sea 17° · 10 h
In May, Portimão, Algarve is warm: daytime highs average 24 °C, and nights cool down to about 14 °C. The sea averages 17.0 °C – bracing, so a wetsuit helps for longer swims. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 26 mm. All in all, May is a good month for a holiday in Portimão, Algarve.
Portimão, Algarve in May81June28° · Sea 19° · 12 h
In June, Portimão, Algarve is hot: daytime highs average 28 °C, and nights cool down to about 17 °C. The sea averages 18.6 °C – bracing, so a wetsuit helps for longer swims. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 8 days the thermometer climbs to 30 °C or more. All in all, June is an excellent month for a holiday in Portimão, Algarve.
Portimão, Algarve in June83July30° · Sea 19° · 12 h
In July, Portimão, Algarve is hot: daytime highs average 30 °C, and nights cool down to about 19 °C. The sea averages 19.2 °C – bracing, so a wetsuit helps for longer swims. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 15 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in Portimão, Algarve.
Portimão, Algarve in July85August30° · Sea 20° · 11 h
In August, Portimão, Algarve is hot: daytime highs average 30 °C, and nights cool down to about 19 °C. The sea averages 19.7 °C – bracing, so a wetsuit helps for longer swims. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 17 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Portimão, Algarve.
Portimão, Algarve in August85September27° · Sea 20° · 10 h
In September, Portimão, Algarve is hot: daytime highs average 27 °C, and nights cool down to about 18 °C. The sea averages 19.9 °C – bracing, so a wetsuit helps for longer swims. With around 10 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 21 mm in total. On about 6 days the thermometer climbs to 30 °C or more. All in all, September is an excellent month for a holiday in Portimão, Algarve.
Portimão, Algarve in September66October24° · Sea 20° · 8 h
In October, Portimão, Algarve is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 19.6 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 65 mm. All in all, October is a good month for a holiday in Portimão, Algarve.
Portimão, Algarve in October30November19° · Sea 18° · 7 h
In November, Portimão, Algarve is mild: daytime highs average 19 °C, and nights cool down to about 12 °C. The sea averages 18.2 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain falls on about 9 days, adding up to 63 mm. All in all, November is not an ideal month for a holiday in Portimão, Algarve.
Portimão, Algarve in November24December16° · Sea 17° · 6 h
In December, Portimão, Algarve is mild: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 16.9 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain falls on about 9 days, adding up to 74 mm. All in all, December is not an ideal month for a holiday in Portimão, Algarve.
Portimão, Algarve in DecemberPlanning a trip to Portimão, Algarve
Getting there
Flying from
- Nonstop flight
- about 2 h 35 min
- Distance
- 1,720 km
- Time zone
- UTC+1
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Portimão, Algarve
When is the best time to visit Portimão, Algarve?
The best time to visit Portimão, Algarve is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Portimão, Algarve?
The sea temperature in Portimão, Algarve ranges from 15.3 °C in February to 19.9 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Portimão, Algarve in October?
Only if you don't mind cold water: in October the sea averages just 19.6 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Portimão, Algarve?
August is the warmest month, with average highs of 30 °C and nights around 19 °C. January is the coolest month at 16 °C.
When does it rain most in Portimão, Algarve?
The wettest month is December with 74 mm of precipitation. The driest month is July with 1 mm.
How many hours of sunshine does Portimão, Algarve get?
Portimão, Algarve gets around 3,270 hours of sunshine a year. The sunniest month is July with 12.2 hours a day; in December there are 6.1 hours a day.
What time zone is Portimão, Algarve in?
Portimão, Algarve uses the time zone Europe/Lisbon: UTC+0 in January and UTC+1 in July.
How long is the flight from London to Portimão, Algarve?
A nonstop flight from London to Portimão, Algarve takes about 2 h 35 min, for a straight-line distance of about 1,720 km.
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