Weather in Leiria for September 2026
In general, the average temperature in Leiria at the beginning of September is 22 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 23 °C by the end of September.
With an average of 2 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 | 21° /15° | 0.6 mm | 5 | |
| 2 Sept. | Patchy rain possible | 21° /15° | 0.1 mm | 5 | |
| 3 Sept. |  Cloudy | 22° /15° | 0 mm | 5 | |
| 4 Sept. |  Mist | 24° /15° | 0 mm | 6 | |
| 5 Sept. | Mist | 22° /14° | 0 mm | 6 | |
| 6 Sept. |  Partly cloudy | 22° /13° | 0.3 mm | 6 | |
| 7 Sept. | Patchy rain possible | 22° /14° | 0.7 mm | 5 | |
| 8 Sept. | Mist | 20° /14° | 0 mm | 5 | |
| 9 Sept. | Mist | 21° /15° | 0.1 mm | 5 | |
| 10 Sept. | Patchy rain possible | 20° /16° | 0.8 mm | 5 | |
| 11 Sept. |  Overcast | 22° /15° | 0 mm | 5 | |
| 12 Sept. |  Sunny | 22° /15° | 0 mm | 6 | |
| 13 Sept. | Mist | 23° /15° | 0 mm | 6 | |
| 14 Sept. | Sunny | 27° /17° | 0 mm | 6 | |
| 15 Sept. | Sunny | 26° /16° | 0 mm | 7 | |
| 16 Sept. | Partly cloudy | 29° /15° | 0 mm | 7 | |
| 17 Sept. | Sunny | 30° /16° | 0 mm | 8 | |
| 18 Sept. | Sunny | 28° /15° | 0.1 mm | 7 | |
| 19 Sept. | Mist | 27° /16° | 0.2 mm | 6 | |
| 20 Sept. | Light rain shower | 23° /15° | 0.2 mm | 5 | |
| 21 Sept. | Patchy rain possible | 22° /14° | 0.2 mm | 5 | |
| 22 Sept. | Sunny | 21° /12° | 0 mm | 5 | |
| 23 Sept. | Mist | 21° /12° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 24° /13° | 0 mm | 6 | |
| 25 Sept. | Fog | 24° /16° | 0.6 mm | 6 | |
| 26 Sept. | Light rain shower | 22° /14° | 4 mm | 6 | |
| 27 Sept. | Patchy rain possible | 20° /13° | 1.4 mm | 5 | |
| 28 Sept. | Sunny | 22° /12° | 6.1 mm | 6 | |
| 29 Sept. | Sunny | 24° /13° | 0 mm | 6 | |
| 30 Sept. | Sunny | 25° /14° | 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 | 24°/16° | 23°/15° | 21°/15° |
| Rainfall | 1 mm | 11 mm | 75 mm |
| Wind | 21 km/h | 20.2 km/h | 19.8 km/h |
| Humidity | 79% | 70% | 80% |
| Rainy days | 0 days | 2 days | 14 days |
| Dry days | 31 days | 28 days | 17 days |
Planning a trip to Leiria? Discover the best time to visit
Leiria in September - FAQ
Leiria water temperatures in September
The average water temperature of the Atlantic Ocean near Leiria in September is 16.6 °C. At the beginning of September temperatures are around 17.1 °C; by the end of the month they get a bit cooler and reach 16.2 °C.
- What is the water temperature in Leiria in September?
- The average water temperature in Leiria in September is 16.6 °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.
What to pack to Leiria in September?
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
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
September rainfall patterns in Leiria
UV exposure in Leiria during September
Quick links
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.