Early September 1 September
89°F
Typical afternoon high
4% historical wet-day frequency
Portugal · Countryside
Is September a good time?
September averages 85°F afternoons and 67°F seas, with about 2 rain days. Later September is typically cooler.
Historical Alentejo regional averages, not a forecast or a measure of queues. Overnight demand compares average stays per day. Covers Évora and Comporta; conditions vary within the region.
What matters most?
Weather 50% · Crowds 30% · Cost 20%
#10 of 12 months here · Balanced mix
Overall combines weather, overnight demand and cost. It does not include sea temperature.
Plan your September
Afternoons around 85°F (29°C): summer clothes; nights around 60°F (15°C): light layers. About 12 hours of daylight. About 2 rain days in a typical September.
The sea averages 67°F. Our swimming guide: fresh: fine once you are in. Your comfort will vary. This is open water near the coast, not a beach-specific reading.
Monthly coastal averages from NOAA, 2011–2025. Sea temperature is separate from the weather and Overall scores.
The sun rises about 07:12 and sets about 19:42 (local time, mid-month). Mornings start around 60°F (15°C); afternoons reach about 85°F (29°C). Expect rain on about 2 days in a typical September.
Early, middle or late?
Early September is typically warmer. The afternoon high averages 89°F on the 1st, versus 83°F on the 30th. Historical wet-day frequency rises from 4% to 11% between those dates.
89°F
Typical afternoon high
4% historical wet-day frequency
85°F
Typical afternoon high
12% historical wet-day frequency
83°F
Typical afternoon high
11% historical wet-day frequency
Historical daily averages from 2011–2025, smoothed over two weeks. A seasonal pattern, not a forecast. This does not establish which week has the lowest prices or fewest visitors.
Weather shows historical patterns, not a forecast. Holidays and events use the dates shown for 2027.
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 189° | 288° | 388° | 488° | 588° | ||
| 688° | 787° | 887° | 987° | 1086° | 1186° | 1286° |
| 1386° | 1485° | 1585° | 1685° | 1784° | 1884° | 1984° |
| 2083° | 2183° | 2283° | 2383° | 2483° | 2583° | 2683° |
| 2783° | 2882° | 2983° | 3083° |
Afternoon high rain likely (25%+) local school holidays public holiday event
School-holiday dates for September 2027 aren't available in our data yet. A day without a school marker doesn't mean schools are open.
Afternoons cool from about 88°F (31°C) in the first week to 83°F (28°C) in the last. The chance of a wet day runs 4–15%.
Visitor season
Moderate season. September averages 59.8% of August's overnight stays per day. Fewer overnight stays than August.
Overnight stays across Alentejo do not measure queues, day visitors or congestion at individual sights. For its size, busier than most of Europe this month.
Hotel price season
Well above usual. Historical regional hotel revenue (2024–2025 monthly average): €75 per guest-night. An average, not a booking quote.
Fewer overnight stays do not automatically mean cheaper rooms. Check actual quotes for your trip.
The historical regional amount comes from INE Portugal, Inquérito à Permanência de Hóspedes: hotel room revenue per guest-night; the country price level is national. Hotel averages are not live booking quotes.
Year-to-year variation
In the 15 years from 2011 to 2025, the month's afternoons averaged between 80°F (27°C) and 91°F (33°C); in 11 of them they were within 3°F (1.5°C) of the typical 85°F (29°C). Rain days ranged from 0 to 12; half the years had 2–5.
Rain days in each September
| Year | Afternoon high | Rain days |
|---|---|---|
| 2011 | 86°F | 2 |
| 2012 | 85°F | 5 |
| 2013 | 87°F | 4 |
| 2014 | 80°F | 12 |
| 2015 | 83°F | 2 |
| 2016 | 88°F | 1 |
| 2017 | 87°F | 0 |
| 2018 | 91°F | 1 |
| 2019 | 87°F | 2 |
| 2020 | 86°F | 3 |
| 2021 | 83°F | 4 |
| 2022 | 82°F | 5 |
| 2023 | 83°F | 6 |
| 2024 | 84°F | 2 |
| 2025 | 85°F | 2 |
Checked against official climate averages for Evora. How we check
Compare dates
| Typical conditions | Aug | Sep | Oct |
|---|---|---|---|
| Afternoons | 92°F | 85°F | 77°F |
| Sea | 66°F | 67°F | 67°F |
| Rain days | 0 | 2 | 7 |
| Overnight demand | 100% | 59.8% | 40% |
August: Warmer afternoons and fewer rain days than September. More overnight demand. August guide →
October: Cooler afternoons and more rain days than September. Less overnight demand. October guide →
Overnight demand measures accommodation stays, not queues. Sea temperatures are monthly coastal averages.
Yellow marks the top three months on the Balanced mix. September stays as your reference.
No other scored month has a Weather score at least 1.0 point higher than September.
Your comparison
Overnight stays are 100% of the busiest month.
Historical regional hotel revenue (2024–2025 monthly average): €88 per guest-night. An average, not a booking quote.
Read the August guide →| Typical conditions | September | August |
|---|---|---|
| Afternoons | 85°F | 92°F |
| Nights | 60°F | 60°F |
| Sea | 67°F | 66°F |
| Rain days | 2 | 0 |
| Visitor season | Moderate season | Peak season |
| Overall / 10 | 7.9 | 6.3 |
| Month rank | #10 | #12 |
| Month | Overall | Rank | High | Low | Sea | Rain days | Weather | Visitor season |
|---|---|---|---|---|---|---|---|---|
| January | 8.4 | #8 | 59°F | 43°F | 61°F | 7 | 7.2 | Low season |
| February | 8.5 | #6 | 62°F | 44°F | 59°F | 6 | 7.7 | Low season |
| March | 8.5 | #5 | 66°F | 46°F | 59°F | 6 | 8.1 | Low season |
| April | 8.6 | #4 | 71°F | 49°F | 61°F | 8 | 9.0 | Moderate season |
| May | 8.7 | #1 | 79°F | 52°F | 63°F | 4 | 9.5 | Moderate season |
| June | 8.1 | #9 | 86°F | 56°F | 65°F | 1 | 8.8 | Moderate season |
| July | 7.1 | #11 | 92°F | 59°F | 66°F | 0 | 7.6 | Busy season |
| August | 6.3 | #12 | 92°F | 60°F | 66°F | 0 | 7.6 | Peak season |
| September | 7.9 | #10 | 85°F | 60°F | 67°F | 2 | 8.8 | Moderate season |
| October | 8.6 | #3 | 77°F | 57°F | 67°F | 7 | 9.1 | Moderate season |
| November | 8.7 | #2 | 65°F | 49°F | 64°F | 9 | 8.4 | Low season |
| December | 8.4 | #7 | 61°F | 44°F | 62°F | 7 | 7.6 | Low season |
Near here
Nearby regions, nearest first. Distances are centre to centre, as the crow flies; they are not road distances or journey times.
Setúbal PeninsulaPortugal · about 50 miles
Balanced Overall 8.5 · Excellent weather, 80°F (26°C) · Busy season · Cost cheap
Óbidos, Nazaré & the Tagus ValleyPortugal · about 70 miles
Balanced Overall 8.6 · Excellent weather, 82°F (28°C) · Busy season · Cost cheap
LisbonPortugal · about 80 miles
Balanced Overall 8.1 · Excellent weather, 78°F (25°C) · Steady all year · Cost pricey
The AlgarvePortugal · about 80 miles
Balanced Overall 8.3 · Excellent weather, 82°F (28°C) · Busy season · Cost moderate
Central Portugalabout 130 miles
Balanced Overall 8.7 · Excellent weather, 80°F (27°C) · Moderate season · Cost cheap
Elsewhere in Europe
Alentejo's weather ranks 37 of 117 countryside regions this month. These countryside regions outside Portugal have clearly better weather on your dates, nearest first, each compared with Alentejo.
It's moderate season, 59.8% of the busiest month and 36% above its average month. That means about 17,000 overnight visitors on a typical September night across the region, 64% of them from Portugal itself. Rentals booked through Airbnb, Booking, Expedia and Tripadvisor add up to 4,100 more: 25 for every 100 counted above. Some are the same properties counted twice.
| Climate suitability (HCI:Urban, 0–100) | 79 |
| How our weather was checked | Official climate averages for Evora from the national weather service, every month: afternoon highs typically within 1°F (0.8°C), night lows within 2°F (0.9°C). |
| Tourist nights per 1,000 residents per day | 35 |
| Busiest month here | August · 59 |
| Visitors as share of people present | 3.4% |
| Rank among Europe's regions this month | 82nd percentile |
| Domestic share of nights | 64% |
| Platform rental nights per 100 counted nights | 25 |
| Visitor share if every platform night were extra | 4.2% |
| Population used | 475,000 |
| Statistical region | PT1C · Alentejo |
Crowds: Eurostat nights spent at tourist accommodation, by month and NUTS 2 region, 2024–2025 average. Overnight visitors per night is the month's nights divided by its days; the per-1,000 figure is Eurostat's, against each year's population. Platform rentals: Eurostat nights booked via Airbnb, Booking, Expedia and Tripadvisor, 2024–2025 average, shown separately because some properties are in both counts. Weather: Holiday Climate Index computed from ERA5 reanalysis with daily highs, night lows and rain days corrected from open national weather-service station records, 2011–2025, population-weighted to the region; day-by-day figures are the same data averaged by date. Heat and rain odds are counted across those years. Sunrise and sunset: NOAA solar equations, local time. Prices: Eurostat price level index and HICP, national; the first figure is regional (INE Portugal, Inquérito à Permanência de Hóspedes: hotel room revenue per guest-night). Full method · this region's data.