AI-generatedGrenaa at a glance
- Best time
- Jul – Aug
- Warmest month
- Jul · 21°
- Warmest sea
- Aug · 18.1°
- Sunshine a year
- 1,870 h
- Rain a year
- 658 mm
- Climate
- Maritime
- Time zone
- UTC+1 / UTC+2
- Elevation
- 5 m
Climate in Grenaa
Grenaa has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 21 °C, while February is the coolest at 4 °C. With around 1,870 hours of sunshine a year, Grenaa is moderately sunny; June is the sunniest month with 8.8 hours a day.
Holiday weather through the year
Best time to visit Grenaa
The best time to visit Grenaa is from July to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 18.1 °C. For sightseeing, day trips and hiking, conditions are most comfortable from June to September. Rain is frequent from October to December; the wettest month is July with 70 mm.
Grenaa through the seasons
How the weather changes over the seasons, with averages for each.
Grenaa in spring
Mar – May
Poor
- 6–15 °C by day
- Sea 7 °C
- 6.7 h of sun a day
- 28 rainy days in all
Grenaa in summer
Jun – Aug
Poor
- 18–21 °C by day
- Sea 17 °C
- 8.3 h of sun a day
- 33 rainy days in all
Grenaa in autumn
Sep – Nov
Poor
- 8–17 °C by day
- Sea 12 °C
- 3.7 h of sun a day
- 35 rainy days in all
Grenaa in winter
Dec – Feb
Poor
- 4–6 °C by day
- Sea 4 °C
- 1.7 h of sun a day
- 33 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun – Sep
15–28 °C and not too much rain
Rainy months
Oct – Dec
Rainy season or more than 12 rainy days
Snow
Jan – Feb
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Grenaa for you.
Your best months: July – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: July – August
Where to go in OctoberSea temperature in October
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 9°
- Midday, 13:00: about 12°
- Afternoon, 16:00: about 12°
- Evening, 20:00: about 11°
- Night, 23:00: about 10°
07:4618:18
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:23–08:39 · evening 17:26–18:41
- Blue hour
- Morning 07:08–07:23 · evening 18:41–18:56
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.
October in Grenaa compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 15° at the start of the month to 10° at the end. The sea cools from 14° to 10°. The days get 2.3 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 15° | 10° |
| Night-time low | 10° | 7° |
| Sea | 14° | 10° |
| Daylight | 11.6 h | 9.4 h |
What is the weather like in Grenaa in October?
In October, Grenaa is cool: daytime highs average 13 °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 3.6 hours a day. Rain is frequent, with about 12 rainy days and 69 mm in total. It is often windy: on a typical day the wind peaks at around 30 km/h. All in all, October is not an ideal month for a holiday in Grenaa.
More details for October
- Daylight
- 10 h 32 min07:46 – 18:18
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 30 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 snowAll months
- Time zone
- UTC+2offset from UTC
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %10 %
- Few rainy daysweight 20 %41 %
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
- Windproof jacket
Compare two months in Grenaa
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 Grenaa: score 41 against 10. In July, days are 8 °C warmer than in October. The sea is 5 °C warmer in July. July has one rainy day fewer. The sun shines 5 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Holiday weather score | 10 | 41better |
| Daytime high | 13° | 21° |
| Night-time low | 9° | 15° |
| Sea | 12.2° | 17.5° |
| Sunshine | 3.6 h | 8.8 hbetter |
| Rainy days | 12 | 11better |
| Rainfall | 69 mm | 70 mm |
| Muggy days | 0better | 1 |
Based on the climate averages 1996–2025.
Grenaa month by month
The typical weather for every month at a glance.
10January4° · Sea 4° · 1.6 h
In January, Grenaa is cold: daytime highs average 4 °C, and nights cool down to about 1 °C. The sea averages 3.5 °C – swimming is only for the hardy. The sun is scarce, with only about 1.6 hours a day. Rain is frequent, with about 11 rainy days and 50 mm in total. Snow falls on about 3 days. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, January is not an ideal month for a holiday in Grenaa.
Grenaa in January12February4° · Sea 3° · 2.3 h
In February, Grenaa is cold: daytime highs average 4 °C, and nights cool down to about 1 °C. The sea averages 2.7 °C – swimming is only for the hardy. The sun is scarce, with only about 2.3 hours a day. Precipitation falls on about 10 days, totalling 42 mm; on about 3 of them it snows. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, February is not an ideal month for a holiday in Grenaa.
Grenaa in February19March6° · Sea 4° · 4.6 h
In March, Grenaa is cold: daytime highs average 6 °C, and nights cool down to about 2 °C. The sea averages 3.7 °C – swimming is only for the hardy. Expect around 4.6 hours of sunshine a day. Rain falls on about 9 days, adding up to 38 mm. Snow falls on about 2 days. All in all, March is not an ideal month for a holiday in Grenaa.
Grenaa in March27April10° · Sea 7° · 7.1 h
In April, Grenaa is cool: daytime highs average 10 °C, and nights cool down to about 5 °C. The sea averages 6.8 °C – swimming is only for the hardy. The sun shines for around 7.1 hours a day. Rain falls on about 9 days, adding up to 37 mm. All in all, April is not an ideal month for a holiday in Grenaa.
Grenaa in April29May15° · Sea 11° · 8.5 h
In May, Grenaa is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sea averages 11.1 °C – swimming is only for the hardy. The sun shines for around 8.5 hours a day. Rain is frequent, with about 11 rainy days and 52 mm in total. All in all, May is not an ideal month for a holiday in Grenaa.
Grenaa in May30June18° · Sea 15° · 8.8 h
In June, Grenaa is mild: daytime highs average 18 °C, and nights cool down to about 12 °C. The sea averages 15.0 °C – swimming is only for the hardy. The sun shines for around 8.8 hours a day. Rain is frequent, with about 11 rainy days and 65 mm in total. All in all, June is not an ideal month for a holiday in Grenaa.
Grenaa in June41July21° · Sea 18° · 8.8 h
In July, Grenaa is mild: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 17.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8.8 hours a day. Rain is frequent, with about 11 rainy days and 70 mm in total. All in all, July is a so-so month for a holiday in Grenaa – and yet one of the best months here.
Grenaa in July38August21° · Sea 18° · 7.4 h
In August, Grenaa is mild: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 18.1 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.4 hours a day. Rain is frequent, with about 12 rainy days and 69 mm in total. All in all, August is not an ideal month for a holiday in Grenaa – and yet one of the best months here.
Grenaa in August20September17° · Sea 16° · 5.7 h
In September, Grenaa is mild: daytime highs average 17 °C, and nights cool down to about 12 °C. The sea averages 15.8 °C – swimming is only for the hardy. Expect around 5.7 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 54 mm in total. All in all, September is not an ideal month for a holiday in Grenaa.
Grenaa in September10October13° · Sea 12° · 3.6 h
In October, Grenaa is cool: daytime highs average 13 °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 3.6 hours a day. Rain is frequent, with about 12 rainy days and 69 mm in total. It is often windy: on a typical day the wind peaks at around 30 km/h. All in all, October is not an ideal month for a holiday in Grenaa.
Grenaa in October8November8° · Sea 9° · 1.8 h
In November, Grenaa is cold: daytime highs average 8 °C, and nights cool down to about 5 °C. The sea averages 8.8 °C – swimming is only for the hardy. The sun is scarce, with only about 1.8 hours a day. Rain is frequent, with about 12 rainy days and 54 mm in total. It is often windy: on a typical day the wind peaks at around 30 km/h. All in all, November is not an ideal month for a holiday in Grenaa.
Grenaa in November8December6° · Sea 6° · 1.2 h
In December, Grenaa is cold: daytime highs average 6 °C, and nights cool down to about 3 °C. The sea averages 5.5 °C – swimming is only for the hardy. The sun is scarce, with only about 1.2 hours a day. Rain is frequent, with about 12 rainy days and 56 mm in total. Snow falls on about 2 days. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, December is not an ideal month for a holiday in Grenaa.
Grenaa in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Grenaa
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 9°. A duvet at night and a jumper for the evening.
The coolest nights are in February (1°), 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 | 10 | 4° | 1° | 3.5° | 1.6 h | 11 | 50 |
| FebruaryFeb | 12 | 4° | 1° | 2.7° | 2.3 h | 10 | 42 |
| MarchMar | 19 | 6° | 2° | 3.7° | 4.6 h | 9 | 38 |
| AprilApr | 27 | 10° | 5° | 6.8° | 7.1 h | 9 | 37 |
| MayMay | 29 | 15° | 9° | 11.1° | 8.5 h | 11 | 52 |
| JuneJun | 30 | 18° | 12° | 15.0° | 8.8 h | 11 | 65 |
| JulyJul | 41 | 21° | 15° | 17.5° | 8.8 h | 11 | 70 |
| AugustAug | 38 | 21° | 15° | 18.1° | 7.4 h | 12 | 69 |
| SeptemberSep | 20 | 17° | 12° | 15.8° | 5.7 h | 10 | 54 |
| OctoberOct | 10 | 13° | 9° | 12.2° | 3.6 h | 12 | 69 |
| NovemberNov | 8 | 8° | 5° | 8.8° | 1.8 h | 12 | 54 |
| DecemberDec | 8 | 6° | 3° | 5.5° | 1.2 h | 12 | 56 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), 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
56.42° N, 10.88° E · 5 m · Europe/Copenhagen
Sea temperature in Grenaa
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 11.0 – 13.1 °C
Swimming season: Always below 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Grenaa ranges from 2.7 °C in February to 18.1 °C in August. 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 August, while the air already peaks in July. In November 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 17.2 and 19.4 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 3.5° | 1.0° | 5.4° | cold |
| FebruaryFeb | 2.7° | 1.4° | 4.3° | cold |
| MarchMar | 3.7° | 1.7° | 4.9° | cold |
| AprilApr | 6.8° | 5.6° | 7.8° | cold |
| MayMay | 11.1° | 10.0° | 12.4° | cold |
| JuneJun | 15.0° | 13.6° | 16.5° | cold |
| JulyJul | 17.5° | 16.0° | 19.1° | fresh |
| AugustAug | 18.1° | 17.2° | 19.4° | fresh |
| SeptemberSep | 15.8° | 14.7° | 16.8° | cold |
| OctoberOct | 12.2° | 11.0° | 13.1° | cold |
| NovemberNov | 8.8° | 7.6° | 10.3° | cold |
| DecemberDec | 5.5° | 3.6° | 7.0° | cold |
Sunshine hours in Grenaa
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 3.6 of 10.5 hours of daylight in Grenaa, 34 % of the daylight hours.
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.
Rain in Grenaa: 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, Grenaa has about 12 rainy days with 69 mm of rain in total.
UV index in Grenaa
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 1 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 6).
Minutes until sunburn in October
- Very fair skin
- about 105 min
- Fair skin
- over 2 h
- Light brown skin
- over 2 h
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, 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.
Wind and clouds in Grenaa
How breezy and how cloudy Grenaa 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 Grenaa typically peaks at 30 km/h during the day: Beaufort 5, fresh 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 is that strong 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 Grenaa: mostly cloudy, with about 3.6 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.
Snow in Grenaa
Snow is possible in Grenaa, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Grenaa.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Grenaa
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Grenaa 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.
Grenaa has its best school-holiday weather during the summer holidays (score 39) and its weakest during the Christmas holidays (score 9).
- 25
Easter holidays
Mar – Apr
Poor
- 9 °C by day
- Sea 6 °C
- 6.4 h of sun a day
- 9 rainy days a month
- 29
May half-term
May – Jun
Poor
- 16 °C by day
- Sea 12 °C
- 8.6 h of sun a day
- 11 rainy days a month
- 39
Summer holidays
Jul – Aug
PoorBest holidays
- 21 °C by day
- Sea 18 °C
- 7.9 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 10
October half-term
Oct
Poor
- 13 °C by day
- Sea 12 °C
- 3.6 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 9
Christmas holidays
Dec – Jan
Poor
- 5 °C by day
- Sea 5 °C
- 1.4 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain, Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 35 min
- Distance
- 920 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.
Compare & alternatives
Grenaa compared
Put Grenaa side by side with another destination.
Grenaa vs Ebeltoft
In October the holiday weather in Grenaa and Ebeltoft is about equally good (score 10 vs 10). During the day it is about as warm in Ebeltoft as in Grenaa. The sea is about equally warm.
| in October | Grenaa | Ebeltoft |
|---|---|---|
| Holiday weather score | 10 | 10 |
| Daytime high | 13° | 13° |
| Sea | 12° | 12° |
| Sunshine | 4 h | 4 h |
| Rainy days | 12 | 12 |
| Best time | Jul – Aug | Jul – Aug |
Through the year
Denmark in October: the best places
In October, Grenaa ranks 17 among the 31 nearest destinations in this country.
- Odense13°12°41
- 2Ringsted13°40
- 3Aarhus13°12°38
- 4Slagelse13°38
- 5Randers13°37
- 6Jelling13°37
- 7Løkken13°37
- 8Billund13°37
- 17GrenaaThis page13°12°10
Near Grenaa
Other destinations close by.
Places with a climate like Grenaa
Destinations whose weather through the year is closest to Grenaa's – good alternatives.
Frequently asked questions about Grenaa
When is the best time to visit Grenaa?
The best time to visit Grenaa 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 Grenaa?
The sea temperature in Grenaa ranges from 2.7 °C in February to 18.1 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Grenaa in October?
Only if you don't mind cold water: in October the sea averages just 12.2 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Grenaa?
July is the warmest month, with average highs of 21 °C and nights around 15 °C. February is the coolest month at 4 °C.
When does it rain most in Grenaa?
Rain is frequent from October to December; the wettest month is July with 70 mm. The driest month is April with 37 mm.
How many hours of sunshine does Grenaa get?
Grenaa gets around 1,870 hours of sunshine a year. The sunniest month is June with 8.8 hours a day; in December there are 1.2 hours a day.
What time zone is Grenaa in?
Grenaa is on UTC+1 in January and UTC+2 in July.
How long is the flight from London to Grenaa?
A nonstop flight from London to Grenaa takes about 1 h 35 min, for a straight-line distance of about 920 km.
Which school holidays are best for Grenaa?
Grenaa has its best school-holiday weather during the summer holidays (score 39) and its weakest during the Christmas holidays (score 9). Holiday ratings (0–100): Easter holidays 25, May half-term 29, summer holidays 39, October half-term 10, Christmas holidays 9.