Weather in Leiria for September 2026
Yellow High Temperature Warning - See hour by hour.
So far, September 2026 in Leiria shows a warmer trend than usual by 3 °C.
Expect cooler weather in the next days in Leiria with the forecast suggesting a temperature of 26.3 °C, lower than the historical average.
In general, the average temperature in Leiria at the beginning of September is 25 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 24.6 °C by the end of September.
With an average of 3 rainy days, Leiria experiences minimal rainfall in September.
Is September a good time to visit Leiria? check out the best time to travel to Leiria page.
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Leiria Weather September
What’s the Weather Like in Leiria This September?
Temperatures trend during September in Leiria
September weather in Leiria day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 22° /15° | 0.4 mm | 6 | |
| 2 Sept. | Patchy rain possible | 24° /15° | 0.1 mm | 6 | |
| 3 Sept. |  Cloudy | 28° /16° | 0 mm | 6 | |
| 4 Sept. |  Mist | 28° /17° | 0.1 mm | 4 | |
| 5 Sept. | Mist | 26° /15° | 0 mm | 6 | |
| 6 Sept. |  Partly cloudy | 24° /14° | 0.2 mm | 6 | |
| 7 Sept. | Patchy rain possible | 23° /15° | 0.5 mm | 6 | |
| 8 Sept. | Mist | 22° /14° | 0 mm | 4 | |
| 9 Sept. | Patchy rain possible | 21° /15° | 0.3 mm | 5 | |
| 10 Sept. | Patchy rain possible | 22° /15° | 0.5 mm | 5 | |
| 11 Sept. |  Overcast | 24° /15° | 0 mm | 6 | |
| 12 Sept. |  Sunny | 26° /16° | 0 mm | 6 | |
| 13 Sept. | Sunny | 28° /17° | 0 mm | 6 | |
| 14 Sept. | Sunny | 29° /18° | 0 mm | 6 | |
| 15 Sept. | Sunny | 25° /16° | 0 mm | 7 | |
| 16 Sept. | Partly cloudy | 27° /15° | 0 mm | 6 | |
| 17 Sept. | Sunny | 28° /15° | 0 mm | 7 | |
| 18 Sept. | Sunny | 27° /15° | 0 mm | 7 | |
| 19 Sept. | Mist | 29° /16° | 0.1 mm | 6 | |
| 20 Sept. | Light rain shower | 23° /15° | 0.2 mm | 5 | |
| 21 Sept. | Sunny | 36° /19° | 0 mm | 6.6 | |
| 22 Sept. | Sunny | 34° /19° | 0 mm | 6.2 | |
| 23 Sept. | Sunny | 31° /17° | 0 mm | 5.8 | |
| 24 Sept. | Sunny | 27° /16° | 0 mm | 5.8 | |
| 25 Sept. | Fog | 25° /15° | 0 mm | 6 | |
| 26 Sept. | Overcast | 23° /15° | 0 mm | 6 | |
| 27 Sept. | Patchy rain possible | 21° /16° | 0.1 mm | 6 | |
| 28 Sept. | Sunny | 27° /15° | 0 mm | 7 | |
| 29 Sept. | Overcast | 23° /15° | 0 mm | 6 | |
| 30 Sept. | Overcast | 26° /12° | 0 mm | 7 | |
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Leiria weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Cloudy | Cloudy | Patchy rain possible |
| Temperatures | 25°/16° | 23°/15° | 21°/15° |
| Rainfall | 2 mm | 15 mm | 66 mm |
| Wind | 19.8 km/h | 20.3 km/h | 18.2 km/h |
| Humidity | 75% | 69% | 75% |
| Rainy days | 0 days | 3 days | 14 days |
| Dry days | 31 days | 27 days | 17 days |
Planning a trip to Leiria? Discover the best time to visit
Leiria in September - FAQ
What are the expected maximum and minimum temperatures in Leiria during September?
How much rainfall should be expected in Leiria during September?
What are the typical wind conditions in Leiria during September?
Leiria water temperatures in September
The average water temperature of the Atlantic Ocean near Leiria in September is 17.3 °C. At the beginning of September temperatures are around 17.4 °C; by the end of the month they stay fairly steady and reach 17 °C.
- What is the water temperature in Leiria in September?
- The average water temperature in Leiria in September is 17.3 °C.
- Can you swim in Leiria in September?
- 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.
UV exposure in Leiria during September
What to pack to Leiria in September?
Mild & changeable · highs around 23 °C, mostly dry
As you prepare for your trip to Leiria in September, 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 Leiria, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
🎒 Accessories
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Where is Leiria?Get accurate weather forecasts for Leiria, located at latitude 39.603 and longitude -9.068. Stay updated with localized weather information tailored for Leiria.