When is the best time to go to Cascais
The chart above shows the best time of year to visit Cascais, Portugal. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Cascais
Cascais weather by month
Please note our recommendations for when to visit Cascais are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 13°C | 123mm | 5.1hrs | 10.8hrs | 16°C |
The weather in January in Cascais is characteristically mild and wet.
Based on weather alone, this is probably a time of year to avoid going to Cascais for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
January is in the winter in Cascais and is typically the coldest month of the year. Daytime maximum temperatures average around a cool 14°C (58°F), whilst at night 8°C (47°F) is normal.
On average January is the driest month of the year in Cascais with around 123mm 4.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 14°C | 121mm | 5.7hrs | 11.7hrs | 15°C |
February in Cascais is generally wet with the temperature being mild.
Based on weather alone, this is probably a time of year to avoid going to Cascais for your holidays. The weather is often not a good and not conducive to spending time outdoors.
February is in the winter in Cascais and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cool 15°C (60°F), whilst at night 9°C (48°F) is normal.
On average February is the 2nd driest month of the year in Cascais with around 121mm 4.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.7 hours of sunshine per day.
March
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 15°C | 78mm | 7.1hrs | 12.8hrs | 15°C |
The weather in March in Cascais is characteristically mild and reasonably dry.
Based on weather alone, this is probably a time of year to avoid going to Cascais for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
March is in the spring in Cascais and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around 17°C (63°F), whilst at night 10°C (50°F) is normal.
On average March is the 3rd driest month of the year in Cascais with around 78mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 17°C | 71mm | 8.2hrs | 14.1hrs | 16°C |
Cascais's weather in April is typically mild and reasonably dry in nature.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Cascais.
April is in the spring in Cascais and is typically the 4th coldest month of the year. Daytime maximum temperatures average around 18°C (65°F), whilst at night 11°C (51°F) is normal.
On average April is the 4th driest month of the year in Cascais with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.2 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 19°C | 46mm | 9.8hrs | 15.2hrs | 17°C |
May is a reasonably dry month in Cascais and the temperature is generally mild.
It is perhaps a good month to visit Cascais, with some very good weather at this time of year.
May is in the spring in Cascais and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a comfortable 21°C (70°F), whilst at night 13°C (55°F) is normal.
On average May is the 5th driest month of the year in Cascais with around 46mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.8 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 22°C | 26mm | 10.6hrs | 10.8hrs | 19°C |
The weather in June in Cascais is characteristically warm and dry.
It is perhaps the perfect month to visit Cascais, with some surprisingly good weather at this time of year.
June is in the summer in Cascais and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 15°C (59°F) is normal.
On average June is the 6th driest month of the year in Cascais with around 26mm 1 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.6 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 24°C | 7mm | 11.9hrs | 11.7hrs | 20°C |
July in Cascais is generally very dry with the temperature being warm.
It is perhaps the perfect month to visit Cascais, with some very good weather at this time of year.
July is in the summer in Cascais and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (80°F), whilst at night 17°C (63°F) is normal.
On average July is the 6th wettest month of the year in Cascais with around 7mm 0.3 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.9 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 24°C | 8mm | 11.6hrs | 12.8hrs | 20°C |
The weather in August in Cascais is characteristically warm and very dry.
It is perhaps the perfect month to visit Cascais, with some inordinately good weather at this time of year.
August is in the summer in Cascais and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (80°F), whilst at night 17°C (63°F) is normal.
On average August is the 5th wettest month of the year in Cascais with around 8mm 0.3 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.6 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 23°C | 31mm | 9.2hrs | 14.1hrs | 20°C |
Cascais's weather in September is typically warm and reasonably dry in nature.
It is perhaps a good month to visit Cascais, with some particularly good weather at this time of year.
September is in the fall / autumn in Cascais and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (78°F), whilst at night 17°C (62°F) is normal.
On average September is the 4th wettest month of the year in Cascais with around 31mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.2 hours of sunshine per day.
Cascais weather in September »
October
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 20°C | 89mm | 7.3hrs | 15.2hrs | 20°C |
October is a a little damp month in Cascais and the temperature is generally warm.
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit Cascais.
October is in the fall / autumn in Cascais and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 14°C (58°F) is normal.
On average October is the 3rd wettest month of the year in Cascais with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.3 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 16°C | 122mm | 5.7hrs | 10.8hrs | 18°C |
The weather in November in Cascais is characteristically mild and wet.
Based on weather alone, this is probably a time of year to avoid going to Cascais for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
November is in the fall / autumn in Cascais and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 17°C (63°F), whilst at night 11°C (52°F) is normal.
On average November is the 2nd wettest month of the year in Cascais with around 122mm 4.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.7 hours of sunshine per day.
December
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 13°C | 120mm | 5.1hrs | 11.7hrs | 17°C |
December in Cascais is generally wet with the temperature being mild.
Based on weather alone, this is probably a time of year to avoid going to Cascais for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
December is in the winter in Cascais and is typically the warmest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 9°C (48°F) is normal.
On average December is the wettest month of the year in Cascais with around 120mm 4.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 hours of sunshine per day.
Other monthly averages
Cascais weather stats
| Hottest month: | August | 26.6°C 79.9°F |
|---|---|---|
| Driest month: | July | 7mm 0.3ins |
| Sunniest month: | August | 11.6hrs |
| Coldest month: | January | 14.2°C 57.6°F |
| Wettest month: | January | 123mm 4.8ins |
| Warmest sea: | September | 20.4°C 68.7°F |
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