AI-generatedSaint Peter Port at a glance
- Best time
- Jun – Sep
- Warmest month
- Aug · 18°
- Warmest sea
- Sep · 17.2°
- Sunshine a year
- 1,920 h
- Rain a year
- 880 mm
- Climate
- Maritime
- Time zone
- UTC+0 / UTC+1
- Elevation
- 10 m
Climate in Saint Peter Port
Saint Peter Port has a maritime climate with moderate summers and cool, often grey winters. August is the warmest month with average highs of 18 °C, while February is the coolest at 9 °C. With around 1,920 hours of sunshine a year, Saint Peter Port is moderately sunny; June is the sunniest month with 8.2 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: June – September
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 14°
- Midday, 13:00: about 15°
- Afternoon, 16:00: about 16°
- Evening, 20:00: about 15°
- Night, 23:00: about 14°
07:2918:22
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:10–08:13 · evening 17:38–18:42
- Blue hour
- Morning 06:57–07:10 · evening 18:42–18:54
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Saint Peter Port in October?
In October, Saint Peter Port is cool: daytime highs average 16 °C, and nights cool down to about 14 °C. The sea averages 16.2 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. It rains often – on about 15 days, adding up to 110 mm. It is often windy, with gusts of around 39 km/h. All in all, October is a so-so month for a holiday in Saint Peter Port.
More details for October
- Daylight
- 10 h 53 min07:29 – 18:22
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 39 km/haverage daily peakAll months
- Cloud cover
- 69 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Guernsey
How the score comes together
- Temperatureweight 50 %76 %
- Sunshineweight 20 %15 %
- Few rainy daysweight 30 %21 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
- Windproof jacket
Sea temperature in Saint Peter Port
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 15.7 – 16.6 °C
Swimming season: Never above 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Saint Peter Port ranges from 9.3 °C in March to 17.2 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in September, while the air already peaks in August. From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in September, eight out of ten years were between 16.7 and 17.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 10.6° | 9.7° | 11.4° | cold |
| FebruaryFeb | 9.7° | 9.0° | 10.5° | cold |
| MarchMar | 9.3° | 8.4° | 10.2° | cold |
| AprilApr | 10.1° | 9.1° | 10.9° | cold |
| MayMay | 11.7° | 10.8° | 12.5° | cold |
| JuneJun | 13.9° | 13.4° | 14.5° | cold |
| JulyJul | 15.8° | 15.1° | 16.6° | cold |
| AugustAug | 17.1° | 16.6° | 17.7° | fresh |
| SeptemberSep | 17.2° | 16.7° | 17.7° | fresh |
| OctoberOct | 16.2° | 15.7° | 16.6° | cold |
| NovemberNov | 14.3° | 13.7° | 14.9° | cold |
| DecemberDec | 12.2° | 11.6° | 12.8° | cold |
Sunshine hours in Saint Peter Port
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.9 of 10.9 hours of daylight in Saint Peter Port, 36 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Saint Peter Port
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 8).
Minutes until sunburn in October
- Very fair skin
- about 60 min
- Fair skin
- about 75 min
- Light brown skin
- about 105 min
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Saint Peter Port: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Saint Peter Port has about 15 rainy days with 110 mm of rain in total.
Wind and clouds in Saint Peter Port
How breezy and how cloudy Saint Peter Port is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Saint Peter Port typically peaks at 39 km/h during the day: Beaufort 6, strong wind.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting, and here it gets there all year.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 69 % of the sky over Saint Peter Port: mostly cloudy, with about 3.9 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Saint Peter Port
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 14°. A duvet at night and a jumper for the evening.
The coolest nights are in February (7°), the warmest in August (16°). Nights are pleasant for sleeping (15 to 20 °C) from July to September. Nights fall below 8 °C on average in February, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 12 | 10° | 8° | 10.6° | 2.2 h | 16 | 102 |
| FebruaryFeb | 17 | 9° | 7° | 9.7° | 3.2 h | 14 | 76 |
| MarchMar | 26 | 10° | 8° | 9.3° | 4.6 h | 12 | 60 |
| AprilApr | 44 | 11° | 9° | 10.1° | 6.7 h | 9 | 47 |
| MayMay | 59 | 13° | 11° | 11.7° | 7.7 h | 8 | 44 |
| JuneJun | 73 | 15° | 14° | 13.9° | 8.2 h | 8 | 45 |
| JulyJul | 83 | 17° | 15° | 15.8° | 8.2 h | 7 | 37 |
| AugustAug | 82 | 18° | 16° | 17.1° | 7.4 h | 9 | 49 |
| SeptemberSep | 76 | 17° | 16° | 17.2° | 6.3 h | 9 | 55 |
| OctoberOct | 47 | 16° | 14° | 16.2° | 3.9 h | 15 | 110 |
| NovemberNov | 25 | 13° | 11° | 14.3° | 2.6 h | 18 | 130 |
| DecemberDec | 15 | 11° | 9° | 12.2° | 2.0 h | 18 | 126 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
49.46° N, 2.54° W · 10 m · Europe/Guernsey
Best time to visit Saint Peter Port
The best time to visit Saint Peter Port is from June to September. The sea stays too cool for a classic beach holiday: even in September it only reaches 17.2 °C. For sightseeing, day trips and hiking, conditions are most comfortable from July to September. Rain is most frequent from October to March; the wettest month is November with 130 mm.
Saint Peter Port through the seasons
How the weather changes over the seasons, with averages for each.
Saint Peter Port in spring
Mar – May
Fair
- 10–13 °C by day
- Sea 10 °C
- 6 h of sun a day
- 29 rainy days in all
Saint Peter Port in summer
Jun – Aug
Good
- 15–18 °C by day
- Sea 16 °C
- 8 h of sun a day
- 24 rainy days in all
Saint Peter Port in autumn
Sep – Nov
Fair
- 13–17 °C by day
- Sea 16 °C
- 4 h of sun a day
- 43 rainy days in all
Saint Peter Port in winter
Dec – Feb
Poor
- 9–11 °C by day
- Sea 11 °C
- 3 h of sun a day
- 47 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Saint Peter Port for you.
Your best months: July – September
Based on the climate averages; tap a month to see its details.
Compare two months in Saint Peter Port
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Saint Peter Port: score 83 against 47. In July, days are 1 °C warmer than in October. The sea is about as warm in both months. July has 8 fewer rainy days. The sun shines 4 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Weather score | 47 | 83better |
| Day high | 16° | 17° |
| Night low | 14° | 15° |
| Sea | 16.2° | 15.8° |
| Sunshine | 3.9 h | 8.2 hbetter |
| Rainy days | 15 | 7better |
| Rainfall | 110 mm | 37 mmbetter |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jul – Sep
15–28 °C and not too much rain
Rainy months
Oct – Mar
12 or more rainy days
Saint Peter Port month by month
The typical weather for every month at a glance.
12January10° · Sea 11° · 2 h
In January, Saint Peter Port is cold: daytime highs average 10 °C, and nights cool down to about 8 °C. The sea averages 10.6 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. It rains often – on about 16 days, adding up to 102 mm. It is often windy, with gusts of around 44 km/h. All in all, January is not an ideal month for a holiday in Saint Peter Port.
Saint Peter Port in January17February9° · Sea 10° · 3 h
In February, Saint Peter Port is cold: daytime highs average 9 °C, and nights cool down to about 7 °C. The sea averages 9.7 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 14 rainy days and 76 mm in total. It is often windy, with gusts of around 42 km/h. All in all, February is not an ideal month for a holiday in Saint Peter Port.
Saint Peter Port in February26March10° · Sea 9° · 5 h
In March, Saint Peter Port is cold: daytime highs average 10 °C, and nights cool down to about 8 °C. The sea averages 9.3 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 60 mm in total. It is often windy, with gusts of around 38 km/h. All in all, March is not an ideal month for a holiday in Saint Peter Port.
Saint Peter Port in March44April11° · Sea 10° · 7 h
In April, Saint Peter Port is cool: daytime highs average 11 °C, and nights cool down to about 9 °C. The sea averages 10.1 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 9 rainy days and 47 mm in total. It is often windy, with gusts of around 34 km/h. All in all, April is a so-so month for a holiday in Saint Peter Port.
Saint Peter Port in April59May13° · Sea 12° · 8 h
In May, Saint Peter Port is cool: daytime highs average 13 °C, and nights cool down to about 11 °C. The sea averages 11.7 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 44 mm. It is often windy, with gusts of around 32 km/h. All in all, May is a so-so month for a holiday in Saint Peter Port.
Saint Peter Port in May73June15° · Sea 14° · 8 h
In June, Saint Peter Port is cool: daytime highs average 15 °C, and nights cool down to about 14 °C. The sea averages 13.9 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 45 mm. It is often windy, with gusts of around 30 km/h. All in all, June is a good month for a holiday in Saint Peter Port.
Saint Peter Port in June83July17° · Sea 16° · 8 h
In July, Saint Peter Port is mild: daytime highs average 17 °C, and nights cool down to about 15 °C. The sea averages 15.8 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 37 mm. It is often windy, with gusts of around 29 km/h. All in all, July is an excellent month for a holiday in Saint Peter Port.
Saint Peter Port in July82August18° · Sea 17° · 7 h
In August, Saint Peter Port is mild: daytime highs average 18 °C, and nights cool down to about 16 °C. The sea averages 17.1 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain falls on about 9 days, adding up to 49 mm. It is often windy, with gusts of around 30 km/h. All in all, August is an excellent month for a holiday in Saint Peter Port.
Saint Peter Port in August76September17° · Sea 17° · 6 h
In September, Saint Peter Port is mild: daytime highs average 17 °C, and nights cool down to about 16 °C. The sea averages 17.2 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 55 mm in total. It is often windy, with gusts of around 34 km/h. All in all, September is a good month for a holiday in Saint Peter Port.
Saint Peter Port in September47October16° · Sea 16° · 4 h
In October, Saint Peter Port is cool: daytime highs average 16 °C, and nights cool down to about 14 °C. The sea averages 16.2 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. It rains often – on about 15 days, adding up to 110 mm. It is often windy, with gusts of around 39 km/h. All in all, October is a so-so month for a holiday in Saint Peter Port.
Saint Peter Port in October25November13° · Sea 14° · 3 h
In November, Saint Peter Port is cool: daytime highs average 13 °C, and nights cool down to about 11 °C. The sea averages 14.3 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. It rains often – on about 18 days, adding up to 130 mm. It is often windy, with gusts of around 43 km/h. All in all, November is not an ideal month for a holiday in Saint Peter Port.
Saint Peter Port in November15December11° · Sea 12° · 2 h
In December, Saint Peter Port is cool: daytime highs average 11 °C, and nights cool down to about 9 °C. The sea averages 12.2 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. It rains often – on about 18 days, adding up to 126 mm. It is often windy, with gusts of around 45 km/h. All in all, December is not an ideal month for a holiday in Saint Peter Port.
Saint Peter Port in DecemberSaint Peter Port compared
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Saint Peter Port vs. Saint Helier
In October the holiday weather in Saint Peter Port and Saint Helier is about equally good (score 47 vs. 47). During the day it is about as warm in Saint Helier as in Saint Peter Port. The sea is about equally warm.
| in October | Saint Peter Port | Saint Helier |
|---|---|---|
| Holiday score | 47 | 47 |
| Daytime high | 16° | 16° |
| Sea | 16° | 16° |
| Sunshine | 4 h | 4 h |
| Rainy days | 15 | 15 |
| Best time | Jun – Sep | Jun – Sep |
Through the year
Planning a trip to Saint Peter Port
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Saint Peter Port in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Saint Peter Port has its best school-holiday weather during the summer holidays (score 82) and its weakest during the Christmas holidays (score 14).
- 39
Easter holidays
Mar – Apr
Poor
- 10 °C by day
- Sea 10 °C
- 6.1 h of sun a day
- 10 rainy days a month
Keep in mind: Frequent rain
- 62
May half-term
May – Jun
Good
- 13 °C by day
- Sea 12 °C
- 7.8 h of sun a day
- 8 rainy days a month
- 82
Summer holidays
Jul – Aug
ExcellentBest holidays
- 17 °C by day
- Sea 17 °C
- 7.7 h of sun a day
- 8 rainy days a month
Good for: Sightseeing & walks
- 47
October half-term
Oct
Fair
- 16 °C by day
- Sea 16 °C
- 3.9 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 14
Christmas holidays
Dec – Jan
Poor
- 10 °C by day
- Sea 11 °C
- 2.1 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- Short trip – train or car is often quicker
- Distance
- 270 km
- Time zone
- UTC+1
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Saint Peter Port
When is the best time to visit Saint Peter Port?
The best time to visit Saint Peter Port is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Saint Peter Port?
The sea temperature in Saint Peter Port ranges from 9.3 °C in March to 17.2 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Saint Peter Port in October?
Only if you don't mind cold water: in October the sea averages just 16.2 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Saint Peter Port?
August is the warmest month, with average highs of 18 °C and nights around 16 °C. February is the coolest month at 9 °C.
When does it rain most in Saint Peter Port?
Rain is most frequent from October to March; the wettest month is November with 130 mm. The driest month is July with 37 mm.
How many hours of sunshine does Saint Peter Port get?
Saint Peter Port gets around 1,920 hours of sunshine a year. The sunniest month is June with 8.2 hours a day; in December there are 2.0 hours a day.
What time zone is Saint Peter Port in?
Saint Peter Port uses the time zone Europe/Guernsey: UTC+0 in January and UTC+1 in July.
Which school holidays are best for Saint Peter Port?
Saint Peter Port has its best school-holiday weather during the summer holidays (score 82) and its weakest during the Christmas holidays (score 14). Holiday ratings (0–100): Easter holidays 39, May half-term 62, Summer holidays 82, October half-term 47, Christmas holidays 14.
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