AI-generatedCalais at a glance
- Best time
- Jul – Aug
- Warmest month
- Aug · 21°
- Warmest sea
- Aug · 17.8°
- Sunshine a year
- 1,780 h
- Rain a year
- 800 mm
- Climate
- Maritime
- Time zone
- UTC+1 / UTC+2
- Elevation
- 6 m
Climate in Calais
Calais has a maritime climate with moderate summers and cool, often grey winters. August is the warmest month with average highs of 21 °C, while January is the coolest at 7 °C. With around 1,780 hours of sunshine a year, Calais is moderately sunny; July is the sunniest month with 7.6 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Poor
Best time to visit: July – August
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 11°
- Midday, 13:00: about 15°
- Afternoon, 16:00: about 15°
- Evening, 20:00: about 13°
- Night, 23:00: about 12°
08:1419:03
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 07:53–08:59 · evening 18:17–19:23
- Blue hour
- Morning 07:41–07:53 · evening 19:23–19:36
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 Calais in October?
In October, Calais is cool: daytime highs average 15 °C, and nights cool down to about 10 °C. The sea averages 16.0 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 14 rainy days and 86 mm in total. All in all, October is not an ideal month for a holiday in Calais.
More details for October
- Daylight
- 10 h 49 min08:14 – 19:03
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 70 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %13 %
- Few rainy daysweight 20 %29 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Sea temperature in Calais
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 15.2 – 16.9 °C
Swimming season: Never above 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Calais ranges from 8.0 °C in March to 17.8 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 17.1 and 18.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 9.2° | 8.1° | 10.3° | cold |
| FebruaryFeb | 8.1° | 6.8° | 9.4° | cold |
| MarchMar | 8.0° | 6.3° | 9.2° | cold |
| AprilApr | 9.3° | 8.2° | 10.3° | cold |
| MayMay | 11.4° | 10.2° | 12.3° | cold |
| JuneJun | 14.0° | 13.1° | 15.0° | cold |
| JulyJul | 16.2° | 15.4° | 17.3° | cold |
| AugustAug | 17.8° | 17.1° | 18.7° | fresh |
| SeptemberSep | 17.6° | 16.9° | 18.3° | fresh |
| OctoberOct | 16.0° | 15.2° | 16.9° | cold |
| NovemberNov | 13.7° | 12.8° | 14.5° | cold |
| DecemberDec | 11.0° | 10.0° | 11.9° | cold |
Sunshine hours in Calais
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 3.8 of 10.8 hours of daylight in Calais, 35 % 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 Calais
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 65 min
- Fair skin
- about 85 min
- Light brown skin
- about 115 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 Calais: 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, Calais has about 14 rainy days with 86 mm of rain in total.
Wind and clouds in Calais
How breezy and how cloudy Calais 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 Calais typically peaks at 25 km/h during the day: Beaufort 4, moderate breeze.
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 70 % of the sky over Calais: mostly cloudy, with about 3.8 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 Calais
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 10°. A duvet at night and a jumper for the evening.
The coolest nights are in January (3°), the warmest in August (15°). Nights are pleasant for sleeping (15 to 20 °C) from July to August. Nights fall below 8 °C on average from November to April, 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 | 8 | 7° | 3° | 9.2° | 2.1 h | 13 | 73 |
| FebruaryFeb | 9 | 8° | 3° | 8.1° | 3.0 h | 11 | 61 |
| MarchMar | 15 | 10° | 4° | 8.0° | 4.4 h | 11 | 53 |
| AprilApr | 23 | 13° | 6° | 9.3° | 6.5 h | 10 | 48 |
| MayMay | 23 | 16° | 10° | 11.4° | 7.0 h | 11 | 59 |
| JuneJun | 27 | 19° | 13° | 14.0° | 7.5 h | 10 | 57 |
| JulyJul | 37 | 21° | 15° | 16.2° | 7.6 h | 11 | 56 |
| AugustAug | 39 | 21° | 15° | 17.8° | 6.9 h | 11 | 71 |
| SeptemberSep | 21 | 19° | 13° | 17.6° | 5.5 h | 11 | 65 |
| OctoberOct | 9 | 15° | 10° | 16.0° | 3.8 h | 14 | 86 |
| NovemberNov | 5 | 11° | 7° | 13.7° | 2.3 h | 15 | 87 |
| DecemberDec | 6 | 8° | 4° | 11.0° | 1.8 h | 14 | 84 |
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
50.95° N, 1.86° E · 6 m · Europe/Paris
Best time to visit Calais
The best time to visit Calais is from July to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 17.8 °C. For sightseeing, day trips and hiking, conditions are most comfortable from May to September. Rain is most frequent from October to January; the wettest month is November with 87 mm.
Calais through the seasons
How the weather changes over the seasons, with averages for each.
Calais in spring
Mar – May
Poor
- 10–16 °C by day
- Sea 10 °C
- 6 h of sun a day
- 33 rainy days in all
Calais in summer
Jun – Aug
Poor
- 19–21 °C by day
- Sea 16 °C
- 7 h of sun a day
- 32 rainy days in all
Calais in autumn
Sep – Nov
Poor
- 11–19 °C by day
- Sea 16 °C
- 4 h of sun a day
- 39 rainy days in all
Calais in winter
Dec – Feb
Poor
- 7–8 °C by day
- Sea 9 °C
- 2 h of sun a day
- 38 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Calais for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Compare two months in Calais
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Calais: score 39 against 9. In August, days are 6 °C warmer than in October. The sea is 2 °C warmer in August. August has 3 fewer rainy days. The sun shines 3 hours longer a day in August.
| Month | October | August |
|---|---|---|
| Weather score | 9 | 39better |
| Day high | 15° | 21° |
| Night low | 10° | 15° |
| Sea | 16.0° | 17.8° |
| Sunshine | 3.8 h | 6.9 hbetter |
| Rainy days | 14 | 11better |
| Rainfall | 86 mm | 71 mmbetter |
| Muggy days | 0better | 1 |
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
May – Sep
15–28 °C and not too much rain
Rainy months
Oct – Jan
12 or more rainy days
Calais month by month
The typical weather for every month at a glance.
8January7° · Sea 9° · 2 h
In January, Calais is cold: daytime highs average 7 °C, and nights cool down to about 3 °C. The sea averages 9.2 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Rain is frequent, with about 13 rainy days and 73 mm in total. All in all, January is not an ideal month for a holiday in Calais.
Calais in January9February8° · Sea 8° · 3 h
In February, Calais is cold: daytime highs average 8 °C, and nights cool down to about 3 °C. The sea averages 8.1 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 11 rainy days and 61 mm in total. All in all, February is not an ideal month for a holiday in Calais.
Calais in February15March10° · Sea 8° · 4 h
In March, Calais is cool: daytime highs average 10 °C, and nights cool down to about 4 °C. The sea averages 8.0 °C – swimming is only for the hardy. Expect around 4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 53 mm in total. All in all, March is not an ideal month for a holiday in Calais.
Calais in March23April13° · Sea 9° · 7 h
In April, Calais is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. The sea averages 9.3 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 48 mm in total. All in all, April is not an ideal month for a holiday in Calais.
Calais in April23May16° · Sea 11° · 7 h
In May, Calais is mild: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 11.4 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 59 mm in total. All in all, May is not an ideal month for a holiday in Calais.
Calais in May27June19° · Sea 14° · 8 h
In June, Calais is mild: daytime highs average 19 °C, and nights cool down to about 13 °C. The sea averages 14.0 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is frequent, with about 10 rainy days and 57 mm in total. All in all, June is not an ideal month for a holiday in Calais.
Calais in June37July21° · Sea 16° · 8 h
In July, Calais is mild: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 16.2 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 56 mm in total. All in all, July is not an ideal month for a holiday in Calais.
Calais in July39August21° · Sea 18° · 7 h
In August, Calais is warm: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 71 mm in total. All in all, August is not an ideal month for a holiday in Calais.
Calais in August21September19° · Sea 18° · 6 h
In September, Calais is mild: daytime highs average 19 °C, and nights cool down to about 13 °C. The sea averages 17.6 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 65 mm in total. All in all, September is not an ideal month for a holiday in Calais.
Calais in September9October15° · Sea 16° · 4 h
In October, Calais is cool: daytime highs average 15 °C, and nights cool down to about 10 °C. The sea averages 16.0 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 14 rainy days and 86 mm in total. All in all, October is not an ideal month for a holiday in Calais.
Calais in October5November11° · Sea 14° · 2 h
In November, Calais is cool: daytime highs average 11 °C, and nights cool down to about 7 °C. The sea averages 13.7 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. It rains often – on about 15 days, adding up to 87 mm. All in all, November is not an ideal month for a holiday in Calais.
Calais in November6December8° · Sea 11° · 2 h
In December, Calais is cold: daytime highs average 8 °C, and nights cool down to about 4 °C. The sea averages 11.0 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Rain is frequent, with about 14 rainy days and 84 mm in total. All in all, December is not an ideal month for a holiday in Calais.
Calais in DecemberCalais compared
Put Calais side by side with another destination.
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Calais vs. Boulogne-sur-Mer
In October the holiday weather in Calais and Boulogne-sur-Mer is about equally good (score 9 vs. 8). During the day it is about as warm in Boulogne-sur-Mer as in Calais. The sea is about equally warm.
| in October | Calais | Boulogne-sur-Mer |
|---|---|---|
| Holiday score | 9 | 8 |
| Daytime high | 15° | 15° |
| Sea | 16° | 16° |
| Sunshine | 4 h | 4 h |
| Rainy days | 14 | 14 |
| Best time | Jul – Aug | Jul – Aug |
Through the year
France in October: the best places
In October, Calais ranks 28 among the 31 nearest destinations in this country.
- Fontainebleau17°65
- 2Tours18°65
- 3Angers17°65
- 4Orléans17°62
- 5Auxerre17°61
- 6Troyes17°60
- 7Le Mans17°60
- 8Paris17°59
- 28CalaisThis page15°16°9
Planning a trip to Calais
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Calais 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.
Calais has its best school-holiday weather during the summer holidays (score 38) and its weakest during the Christmas holidays (score 7).
- 21
Easter holidays
Mar – Apr
Poor
- 12 °C by day
- Sea 9 °C
- 5.9 h of sun a day
- 11 rainy days a month
- 24
May half-term
May – Jun
Poor
- 17 °C by day
- Sea 12 °C
- 7.1 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 38
Summer holidays
Jul – Aug
PoorBest holidays
- 21 °C by day
- Sea 17 °C
- 7.1 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 9
October half-term
Oct
Poor
- 15 °C by day
- Sea 16 °C
- 3.8 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain
- 7
Christmas holidays
Dec – Jan
Poor
- 7 °C by day
- Sea 10 °C
- 2.0 h of sun a day
- 13 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
- 170 km
- Time zone
- UTC+2
- 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 Calais
When is the best time to visit Calais?
The best time to visit Calais is from July to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Calais?
The sea temperature in Calais ranges from 8.0 °C in March to 17.8 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Calais in October?
Only if you don't mind cold water: in October the sea averages just 16.0 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Calais?
August is the warmest month, with average highs of 21 °C and nights around 15 °C. January is the coolest month at 7 °C.
When does it rain most in Calais?
Rain is most frequent from October to January; the wettest month is November with 87 mm. The driest month is April with 48 mm.
How many hours of sunshine does Calais get?
Calais gets around 1,780 hours of sunshine a year. The sunniest month is July with 7.6 hours a day; in December there are 1.8 hours a day.
What time zone is Calais in?
Calais uses the time zone Europe/Paris: UTC+1 in January and UTC+2 in July.
Which school holidays are best for Calais?
Calais has its best school-holiday weather during the summer holidays (score 38) and its weakest during the Christmas holidays (score 7). Holiday ratings (0–100): Easter holidays 21, May half-term 24, Summer holidays 38, October half-term 9, Christmas holidays 7.
Near Calais
Other destinations close by.
Places with a climate like Calais
Destinations whose weather through the year is closest to Calais's – good alternatives.