SeasonMapSaint Peter Port (Sark) weather in July
Guernsey
July in Saint Peter Port: nice, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Saint Peter Port · #354 of 1383 destinations to visit in July · comfort 88/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Saint Peter Port in July
No notes yet. Open Saint Peter Port on the map to add the first one.
Saint Peter Port climate normals — July
| Daytime high | 17°C / 62°F | 😎 nice |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Sea temperature | 17°C / 62°F | 🧊 bracing |
| Rainfall | 30 mm / 1.2 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 14°C / 57°F | |
| Sunshine | 12.8 h/day | |
| Daylight | 15.8 h | |
| Wind | 30 km/h / 19 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Saint Peter Port in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdstravelers describe it as peak season, Viaer Marchi, school holidays in 7 of the markets that fill it
Sourced from traveler notes: “Forum posters name July/August as genuine high season - busier streets and traffic in St Peter Port, but with the…” — Tripadvisor community
Peak crowdsBusyShoulder seasonQuiet
Best months for Saint Peter Port's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherSaint Peter Port's weather peaks June–August, best around July.
July includes Viaer Marchi.
Best weatherFair weatherToughest weather
What's on in Saint Peter Port in July
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Herm and Sark boat season
15 Apr – 15 Oct · usuallySummer season opensThe small boats to Herm, Sark and Alderney run frequently from the harbour through the season and thin out sharply after October. Half the reason to be based here is the day you spend on another island. Source ↗
- Festival
Viaer Marchi
6 JulMajor festivalCrowdedThe old market revived for one evening at Saumarez Park on the first Monday in July: crafts, tug of war, bean jar and the island's own Norman French on the signs. Very local, and the better for it. Source ↗
Nearby, and something's on
Within 300 km of Saint Peter Port — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Saint Peter Port?
Saint Peter Port in July — FAQ
- Is July a good time to visit Saint Peter Port?
- July in Saint Peter Port: nice, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Saint Peter Port on SeasonMap's comfort score (88/100).
- What is the weather like in Saint Peter Port in July?
- In July, Saint Peter Port averages a daily high of 16.9°C and a low of 15.7°C, with about 30.2 mm of rain over roughly 6.4 rainy days.
- What is the air quality in Saint Peter Port in July?
- Saint Peter Port has a mean US Air Quality Index of about 43 in July.
Other months in Saint Peter Port
Compare Saint Peter Port in July
Warmer or cooler than Saint Peter Port in July
Similar destinations in Western Europe — July
Within 300 km: Isle of Wight's Round the Island Race around 20 Jun – 10 Jul, and Bath's Roman Baths open late on 1 Jul – 31 Aug.