The month in detail
What to expect in September
Autumn in Hydra is often underrated: 29°C, golden light and declining crowds. An interesting window. Rain is virtually absent (10% of days) — ideal for planning without a backup. A good balance between weather and crowds, even if June (9.1/10) remains theoretically better.
September ranks 2 out of 12 months in Hydra. Compared to August: −3°C daytime, 5 pts more rainy days, −1.1h of sun per day.
This month's conditions
What it's like in September
UV index
7 · high
sunscreen and hat advised
Feels like
comfortable
15°
Sea
25°C
pleasant for swimming
Daylight
12.2h of daylight
Air quality
good
AQI 38
Compare
Is September the right month?
The best month in Hydra is June (9.1/10), 0.2 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 · Hydra
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Hydra
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 holiday.
Country · Greece
🗣️LanguageGreek
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘ+1.16°C/decade
🔥Hottest monthJuly · 33°C
❄️Coolest monthJanuary · 14°C
🌧️Rainiest month ⓘDecember · 19%
🏖️ Beach holiday
📅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 Hydra ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
GreeceTemperate oceanic climate with a 9.1 → 4.4 gap between best and worst month. 10 years of ERA5 data to choose by project.
37.35°N · 23.47°E
Questions
Frequently asked questions
What is the best time to visit Hydra?
June is the best month with 30.0°C highs, 22.0°C lows, 9.7h of sunshine and 7.0% rainy days. The months of June & September offer comparable conditions.
How many hours of sunshine does Hydra get in June?
Hydra averages 9.7 sunshine hours per day in June. It is the sunniest month with a climate score of 8.8/10.
What is the rainiest month in Hydra?
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 Hydra in June?
In June, overnight lows reach 22.0°C, while afternoon highs average 30.0°C.
Is Hydra good in winter?
In winter (December-February), Hydra scores 6.1/10 on average — Decent period conditions for cultural visits.. The best month overall remains June with a score of 8.8/10.
When should you avoid Hydra?
January is the most difficult month to visit Hydra, 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 Hydra in September?
In September, the sea averages 25°C in Hydra: pleasant for swimming. Swimming is pleasant without a wetsuit.
Do you need sun protection in Hydra in September?
The average UV index reaches 7 in September in Hydra (high), with about 12.2h of daylight. Sunscreen and hat advised.