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Algarve, Portugal · Temperate oceanic

Algarve in September: go or not?

Excellent time. Algarve in September scores 9.0/10.

📅 Updated August 2026 🛰️ ERA5 · 10 years 📍 37.10°N · 8.68°W
⚡ This month's verdict
Go for it
Algarve · September
9.0
18–26°
Temperature
10%
Rain
9h
Sun
🌊 Seaside☀️ Bright🍴 Gastronomy
Photo : Sean Oulashin via Unsplash
The month in detail

What to expect in September

Autumn in Algarve is often underrated: 26.0°C, golden light and declining crowds. An interesting window. Rain is virtually absent (10.0% 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: −3°C daytime, 10 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), 0.9 pt higher than September.

See July →See all 12 months →
Context

Our verdict

The Algarve is the entire south of Portugal: 300 km of Atlantic coast, golden cliffs, spectacular beaches, golf courses (one of Europe's #1 golf destinations). July is my favourite month (9.9/10): 18-28°C, 2% rain, sea at 21°C (a bit cool), constant skies.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Algarve

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
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 holiday.

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 · 29°C
❄️Coolest monthJanuary · 16°C
🌧️Rainiest month March · 36%

🏖️ Beach holiday

📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) Modérée
🛂VisaSchengen · 90 days
Location

Where is Algarve ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Portugal
Temperate oceanic climate with a 9.9 → 4.5 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 28.0°C highs, 18.0°C lows, 11.6h of sunshine and 2.0% 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?
December is the most unfavourable month with December 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 18.0°C, while afternoon highs average 28.0°C.
Is Algarve good in winter?
In winter (December-February), Algarve scores 6.1/10 on average — Decent period conditions for cultural visits.. The best month overall remains July with a score of 9.9/10.
When should you avoid Algarve?
December is the most difficult month to visit Algarve, with December 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 18°C 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.