Weather in Cascais for October 2026
In general, the average temperature in Cascais at the beginning of October is 21.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 19.1 °C by the end of October.
Cascais experiences heavy rainfall in October, with over 20 rainy days and an average total precipitation 97.7 mm.
Is October a good time to visit Cascais? check out the best time to travel to Cascais page.
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Cascais Weather October
Temperatures trend during October in Cascais
October weather in Cascais day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Oct. |  Sunny | 23° /18° | 0 mm | 6 | |
| 2 Oct. | Sunny | 22° /18° | 0.1 mm | 6 | |
| 3 Oct. | Sunny | 22° /17° | 0 mm | 6 | |
| 4 Oct. | Sunny | 21° /17° | 0 mm | 6 | |
| 5 Oct. |  Cloudy | 22° /17° | 0 mm | 5 | |
| 6 Oct. |  Overcast | 22° /18° | 1.5 mm | 6 | |
| 7 Oct. | Sunny | 21° /18° | 2.7 mm | 5 | |
| 8 Oct. | Sunny | 21° /18° | 1.2 mm | 5 | |
| 9 Oct. | Sunny | 22° /18° | 0.8 mm | 5 | |
| 10 Oct. |  Partly cloudy | 22° /18° | 0.3 mm | 6 | |
| 11 Oct. | Sunny | 22° /18° | 4.4 mm | 6 | |
| 12 Oct. | Sunny | 22° /19° | 0.8 mm | 6 | |
| 13 Oct. |  Light rain | 22° /18° | 1.1 mm | 5 | |
| 14 Oct. |  Patchy rain possible | 22° /18° | 0.2 mm | 6 | |
| 15 Oct. | Patchy rain possible | 20° /18° | 2.9 mm | 5 | |
| 16 Oct. | Light rain shower | 21° /18° | 4.5 mm | 5 | |
| 17 Oct. | Light rain shower | 21° /18° | 8 mm | 5 | |
| 18 Oct. | Patchy rain possible | 20° /18° | 1 mm | 5 | |
| 19 Oct. |  Moderate or heavy rain shower | 21° /18° | 8.5 mm | 5 | |
| 20 Oct. | Patchy rain possible | 19° /17° | 0.9 mm | 5 | |
| 21 Oct. | Light rain shower | 20° /17° | 2.5 mm | 5 | |
| 22 Oct. | Light rain shower | 19° /16° | 9.8 mm | 5 | |
| 23 Oct. | Light rain shower | 20° /16° | 2.2 mm | 5 | |
| 24 Oct. | Light rain shower | 20° /16° | 0.9 mm | 5 | |
| 25 Oct. | Patchy rain possible | 19° /17° | 1.7 mm | 5 | |
| 26 Oct. | Light rain shower | 19° /16° | 0.9 mm | 5 | |
| 27 Oct. | Light rain shower | 20° /16° | 1.1 mm | 5 | |
| 28 Oct. | Patchy rain possible | 20° /16° | 10 mm | 4 | |
| 29 Oct. | Light rain shower | 20° /16° | 7.5 mm | 4 | |
| 30 Oct. | Patchy rain possible | 18° /16° | 0.6 mm | 4 | |
| 31 Oct. | Light rain shower | 18° /15° | 1 mm | 5 | |
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Cascais weather in October vs September vs November
| September | October | November | |
|---|---|---|---|
| Weather | Sunny | Patchy rain possible | Patchy rain possible |
| Temperatures | 21°/18° | 20°/18° | 18°/15° |
| Rainfall | 28 mm | 98 mm | 68 mm |
| Wind | 25.1 km/h | 26.8 km/h | 25 km/h |
| Humidity | 77% | 76% | 75% |
| Rainy days | 8 days | 22 days | 13 days |
| Dry days | 22 days | 9 days | 17 days |
Planning a trip to Cascais? Discover the best time to visit
Cascais in October - FAQ
Cascais water temperatures in October
The average water temperature of the Atlantic Ocean near Cascais in October is 16.2 °C. At the beginning of October temperatures are around 16.1 °C; by the end of the month they stay fairly steady and reach 16.3 °C.
- What is the water temperature in Cascais in October?
- The average water temperature in Cascais in October is 16.2 °C.
- Can you swim in Cascais in October?
- Brisk: quick dips and active swimming are fine, but pack a 2–3 mm spring suit if you plan longer sessions or early-morning outings.
What to pack to Cascais in October?
As you prepare for your trip to Cascais in October, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Cascais, during October, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Umbrellas/Raincoats: For rainy days
October rainfall patterns in Cascais
UV exposure in Cascais during October
Quick links
Where is Cascais?Get accurate weather forecasts for Cascais, located at latitude 38.697 and longitude -9.421. Stay updated with localized weather information tailored for Cascais.