The month in detail
What to expect in September
Autumn in Algarve is often underrated: 79°F, golden light and declining crowds. An interesting window. Rain is virtually absent (6% of days) — ideal for planning without a backup. This is one of the best times of year to visit Algarve.
September ranks 4 out of 12 months in Algarve. Compared to August: −5°F daytime, 5 pts more rainy days, −1.8h of sun per day.
This month's conditions
What it's like in September
UV index
6 · high
sunscreen and hat advised
Feels like
comfortable
15°
Sea
18°C
cold, for the brave
Daylight
12.2h of daylight
Air quality
good
AQI 30
Compare
Is September the right month?
The best month in Algarve is July (9.9/10), 0.8 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Algarve
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Algarve
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.
Country · Portugal
🗣️LanguagePortuguese
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthAugust · 84°F
❄️Coolest monthJanuary · 61°F
🌧️Rainiest month ⓘDecember · 23%
🏖️ Beach trip
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
🛂VisaSchengen · 90 days
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Algarve ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
PortugalTemperate oceanic climate with a 9.9 → 7.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
37.10°N · 8.68°W
Questions
Frequently asked questions
What is the best time to visit Algarve?
July is the best month with 82°F highs, 64°F lows, 11.6h of sunshine and 1.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does Algarve get in July?
Algarve averages 11.6 sunshine hours per day in July. It is the sunniest month with a climate score of 9.9/10.
What is the rainiest month in Algarve?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Algarve in July?
In July, overnight lows reach 64°F, while afternoon highs average 82°F.
Is Algarve good in winter?
In winter (December-February), Algarve scores 7.0/10 on average — Acceptable conditions for cultural visits.. The best month overall remains July with a score of 9.9/10.
When should you avoid Algarve?
January is the most difficult month to visit Algarve, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Algarve in September?
In September, the sea averages 64°F in Algarve: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Algarve in September?
The average UV index reaches 6 in September in Algarve (high), with about 12.2h of daylight. Sunscreen and hat advised.