AI-generatedIerissos at a glance
- Best time
- Jun – Sep
- Warmest month
- Jul · 32°
- Warmest sea
- Aug · 26.6°
- Sunshine a year
- 2,580 h
- Rain a year
- 622 mm
- Climate
- Mediterranean
- Time zone
- UTC+2 / UTC+3
- Elevation
- 6 m
Climate in Ierissos
Ierissos has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. July is the warmest month with average highs of 32 °C, while January is the coolest at 11 °C. With around 2,580 hours of sunshine a year, Ierissos is sunny; July is the sunniest month with 11.2 hours a day.
Holiday weather through the year
Best time to visit Ierissos
The best time to visit Ierissos is from June to September. For a beach holiday – sea from 21 °C, warm and mostly dry – go from June to September. For sightseeing, day trips and hiking, conditions are most comfortable from March to May and from September to November. The wettest month is December with 88 mm of precipitation.
Ierissos through the seasons
How the weather changes over the seasons, with averages for each.
Ierissos in spring
Mar – May
Fair
- 15–25 °C by day
- Sea 16 °C
- 7.5 h of sun a day
- 26 rainy days in all
Ierissos in summer
Jun – Aug
Excellent
- 30–32 °C by day
- Sea 25 °C
- 10.9 h of sun a day
- 14 rainy days in all
Ierissos in autumn
Sep – Nov
Fair
- 17–27 °C by day
- Sea 21 °C
- 6.1 h of sun a day
- 19 rainy days in all
Ierissos in winter
Dec – Feb
Poor
- 11–13 °C by day
- Sea 14 °C
- 3.7 h of sun a day
- 26 rainy days in all
Which month for what?
Beach & swimming
Jun – Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Mar – May, Sep – Nov
15–28 °C and not too much rain
Find your perfect month
Tell us what you like and we rate every month in Ierissos for you.
Your best months: June, August – September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: June – September
Where to go in OctoberSea temperature in October
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 15°
- Midday, 13:00: about 21°
- Afternoon, 16:00: about 22°
- Evening, 20:00: about 19°
- Night, 23:00: about 17°
07:3418:46
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:17–08:11 · evening 18:09–19:03
- Blue hour
- Morning 07:06–07:17 · evening 19:03–19:14
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 Ierissos compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 24° at the start of the month to 19° at the end. The sea cools from 23° to 19°. The days get 1.2 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 24° | 19° |
| Night-time low | 16° | 12° |
| Sea | 23° | 19° |
| Daylight | 11.8 h | 10.6 h |
What is the weather like in Ierissos in October?
In October, Ierissos is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sea averages 21.0 °C – refreshing for a swim. Expect around 5.8 hours of sunshine a day. Rain falls on about 7 days, adding up to 58 mm. All in all, October is a so-so month for a holiday in Ierissos.
More details for October
- Daylight
- 11 h 12 min07:34 – 18:46
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 50 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+3offset from UTC
How the score comes together
- Temperatureweight 35 %48 %
- Seaweight 25 %57 %
- Sunshineweight 20 %47 %
- Few rainy daysweight 20 %82 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- A jumper for the evenings
Compare two months in Ierissos
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
September has the better holiday weather in Ierissos: score 96 against 57. In September, days are 5 °C warmer than in October. The sea is 3 °C warmer in September. September has one rainy day fewer. The sun shines 3 hours longer a day in September.
| Month | October | September |
|---|---|---|
| Holiday weather score | 57 | 96better |
| Daytime high | 22° | 27° |
| Night-time low | 14° | 19° |
| Sea | 21.0° | 24.3° |
| Sunshine | 5.8 h | 8.4 hbetter |
| Rainy days | 7 | 6better |
| Rainfall | 58 mm | 42 mmbetter |
| Muggy days | 1better | 6 |
Based on the climate averages 1996–2025.
Ierissos month by month
The typical weather for every month at a glance.
15January11° · Sea 14° · 3.5 h
In January, Ierissos is cool: daytime highs average 11 °C, and nights cool down to about 5 °C. The sea averages 14.0 °C – swimming is only for the hardy. The sun is scarce, with only about 3.5 hours a day. Rain falls on about 9 days, adding up to 60 mm. All in all, January is not an ideal month for a holiday in Ierissos.
Ierissos in January20February13° · Sea 13° · 4.6 h
In February, Ierissos is cool: daytime highs average 13 °C, and nights cool down to about 5 °C. The sea averages 13.3 °C – swimming is only for the hardy. Expect around 4.6 hours of sunshine a day. Rain falls on about 8 days, adding up to 52 mm. All in all, February is not an ideal month for a holiday in Ierissos.
Ierissos in February21March15° · Sea 13° · 5.9 h
In March, Ierissos is cool: daytime highs average 15 °C, and nights cool down to about 7 °C. The sea averages 13.2 °C – swimming is only for the hardy. Expect around 5.9 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 69 mm in total. All in all, March is not an ideal month for a holiday in Ierissos.
Ierissos in March32April19° · Sea 15° · 7.5 h
In April, Ierissos is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 14.7 °C – swimming is only for the hardy. The sun shines for around 7.5 hours a day. Rain falls on about 8 days, adding up to 47 mm. All in all, April is not an ideal month for a holiday in Ierissos.
Ierissos in April75May25° · Sea 19° · 9.0 h
In May, Ierissos is warm: daytime highs average 25 °C, and nights cool down to about 15 °C. The sea averages 18.7 °C – bracing, so a wetsuit helps for longer swims. With around 9.0 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 51 mm. All in all, May is a good month for a holiday in Ierissos.
Ierissos in May94June30° · Sea 23° · 10.7 h
In June, Ierissos is hot: daytime highs average 30 °C, and even at night it stays warm at around 20 °C. The sea averages 23.3 °C – pleasant for swimming. With around 10.7 hours of sunshine a day, there is plenty of sun. Rain falls on about 7 days, adding up to 39 mm. On about 14 days the thermometer climbs to 30 °C or more. All in all, June is an excellent month for a holiday in Ierissos.
Ierissos in June93July32° · Sea 26° · 11.2 h
In July, Ierissos is hot: daytime highs average 32 °C, and even at night it stays warm at around 23 °C. The sea averages 26.1 °C – lovely and warm for swimming. With around 11.2 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 31 mm in total. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is an excellent month for a holiday in Ierissos.
Ierissos in July94August32° · Sea 27° · 10.8 h
In August, Ierissos is hot: daytime highs average 32 °C, and even at night it stays warm at around 23 °C. The sea averages 26.6 °C – lovely and warm for swimming. With around 10.8 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 23 mm in total. On about 26 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Ierissos.
Ierissos in August96September27° · Sea 24° · 8.4 h
In September, Ierissos is hot: daytime highs average 27 °C, and nights cool down to about 19 °C. The sea averages 24.3 °C – pleasant for swimming. The sun shines for around 8.4 hours a day. Rain falls on about 6 days, adding up to 42 mm. On about 6 days the thermometer climbs to 30 °C or more. All in all, September is an excellent month for a holiday in Ierissos.
Ierissos in September57October22° · Sea 21° · 5.8 h
In October, Ierissos is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sea averages 21.0 °C – refreshing for a swim. Expect around 5.8 hours of sunshine a day. Rain falls on about 7 days, adding up to 58 mm. All in all, October is a so-so month for a holiday in Ierissos.
Ierissos in October22November17° · Sea 18° · 4.0 h
In November, Ierissos is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 17.9 °C – bracing, so a wetsuit helps for longer swims. Expect around 4.0 hours of sunshine a day. Rain falls on about 7 days, adding up to 61 mm. All in all, November is not an ideal month for a holiday in Ierissos.
Ierissos in November13December13° · Sea 15° · 3.1 h
In December, Ierissos is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. The sea averages 15.4 °C – swimming is only for the hardy. The sun is scarce, with only about 3.1 hours a day. Rain is frequent, with about 9 rainy days and 88 mm in total. All in all, December is not an ideal month for a holiday in Ierissos.
Ierissos in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Ierissos
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°
- Warm 20–24°
- muggy month (15+ muggy days)
CoolOctober: nights around 14°. A duvet at night and a jumper for the evening. Muggy on about 1 day (dew point 18 °C or more).
The coolest nights are in January (5°), the warmest in August (23°). Tropical nights of 20 °C and more are the rule from June to August; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in May and in September. Nights fall below 8 °C on average from December to March, so the room should be heated. It is muggy (dew point 18 °C or more) on about 43 days a year, mostly in July.
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 | 15 | 11° | 5° | 14.0° | 3.5 h | 9 | 60 |
| FebruaryFeb | 20 | 13° | 5° | 13.3° | 4.6 h | 8 | 52 |
| MarchMar | 21 | 15° | 7° | 13.2° | 5.9 h | 10 | 69 |
| AprilApr | 32 | 19° | 11° | 14.7° | 7.5 h | 8 | 47 |
| MayMay | 75 | 25° | 15° | 18.7° | 9.0 h | 8 | 51 |
| JuneJun | 94 | 30° | 20° | 23.3° | 10.7 h | 7 | 39 |
| JulyJul | 93 | 32° | 23° | 26.1° | 11.2 h | 4 | 31 |
| AugustAug | 94 | 32° | 23° | 26.6° | 10.8 h | 4 | 23 |
| SeptemberSep | 96 | 27° | 19° | 24.3° | 8.4 h | 6 | 42 |
| OctoberOct | 57 | 22° | 14° | 21.0° | 5.8 h | 7 | 58 |
| NovemberNov | 22 | 17° | 10° | 17.9° | 4.0 h | 7 | 61 |
| DecemberDec | 13 | 13° | 6° | 15.4° | 3.1 h | 9 | 88 |
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
40.40° N, 23.88° E · 6 m · Europe/Athens
Sea temperature
Sea temperature in Ierissos
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 20.0 – 22.3 °C
Swimming season: Jun – Oct
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Ierissos ranges from 13.2 °C in March to 26.6 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
The sea warms up slowly: it is warmest in August, while the air already peaks in July. From November 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 25.7 and 27.2 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 14.0° | 12.8° | 15.2° | cold |
| FebruaryFeb | 13.3° | 11.9° | 14.5° | cold |
| MarchMar | 13.2° | 12.1° | 14.1° | cold |
| AprilApr | 14.7° | 13.5° | 15.6° | cold |
| MayMay | 18.7° | 17.7° | 19.5° | fresh |
| JuneJun | 23.3° | 22.4° | 24.4° | pleasant |
| JulyJul | 26.1° | 25.2° | 27.1° | warm |
| AugustAug | 26.6° | 25.7° | 27.2° | warm |
| SeptemberSep | 24.3° | 23.5° | 25.1° | pleasant |
| OctoberOct | 21.0° | 20.0° | 22.3° | refreshing |
| NovemberNov | 17.9° | 16.4° | 19.1° | fresh |
| DecemberDec | 15.4° | 14.6° | 16.5° | cold |
Sunshine
Sunshine hours in Ierissos
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 5.8 of 11.2 hours of daylight in Ierissos, 52 % 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
Rain in Ierissos: 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, Ierissos has about 7 rainy days with 58 mm of rain in total.
UV index
UV index in Ierissos
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 4 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 10).
Minutes until sunburn in October
- Very fair skin
- about 35 min
- Fair skin
- about 40 min
- Light brown skin
- about 60 min
- Olive skin
- about 75 min
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 & clouds
Wind and clouds in Ierissos
How breezy and how cloudy Ierissos 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 Ierissos typically peaks at 11 km/h during the day: Beaufort 2, light breeze or less.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 50 % of the sky over Ierissos: variable cloud, with about 5.8 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.
Heat & humidity
Heat and humidity in Ierissos
How often the day gets hot in Ierissos (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Ierissos has about 0 hot days, with an average daytime high of 22 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Ierissos
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Ierissos 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.
Ierissos has its best school-holiday weather during the summer holidays (score 94) and its weakest during the Christmas holidays (score 14).
- 29
Easter holidays
Mar – Apr
Poor
- 18 °C by day
- Sea 14 °C
- 7.0 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
- 79
May half-term
May – Jun
Good
- 26 °C by day
- Sea 20 °C
- 9.3 h of sun a day
- 7 rainy days a month
Good for: Sightseeing & walks
- 94
Summer holidays
Jul – Aug
ExcellentBest holidays
- 32 °C by day
- Sea 26 °C
- 10.9 h of sun a day
- 4 rainy days a month
Good for: Beach & swimming
- 57
October half-term
Oct
Fair
- 22 °C by day
- Sea 21 °C
- 5.8 h of sun a day
- 7 rainy days a month
Good for: Sightseeing & walks
- 14
Christmas holidays
Dec – Jan
Poor
- 12 °C by day
- Sea 15 °C
- 3.3 h of sun a day
- 9 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 3 h 10 min
- Distance
- 2,230 km
- Time zone
- UTC+3
- 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.
Good to know: Greece
- Currency
- Euro (EUR)
- Language
- Greek
- Sockets
- Type C, F · 230 V
- Traffic
- Drives on the right
- Dialling code
- +30
- Emergency number
- 112
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Ierissos compared
Put Ierissos side by side with another destination.
Ierissos vs Neos Marmaras
In October the holiday weather in Ierissos and Neos Marmaras is about equally good (score 57 vs 58). During the day it is about as warm in Neos Marmaras as in Ierissos. The sea is about equally warm.
| in October | Ierissos | Neos Marmaras |
|---|---|---|
| Holiday weather score | 57 | 58 |
| Daytime high | 22° | 22° |
| Sea | 21° | 21° |
| Sunshine | 6 h | 6 h |
| Rainy days | 7 | 7 |
| Best time | Jun – Sep | Jun – Sep |
Through the year
Best places in the country
Greece in October: the best places
In October, Ierissos ranks 16 among the 31 nearest destinations in this country.
- Larissa22°89
- 2Pella22°87
- 3Giannitsa22°87
- 4Serres22°85
- 5Veria22°85
- 6Kozani19°85
- 7Thessaloniki22°21°84
- 8Drama22°84
- 16IerissosThis page22°21°57
Places nearby
Near Ierissos
Other destinations close by.
Places with a similar climate
Places with a climate like Ierissos
Destinations whose weather through the year is closest to Ierissos's – good alternatives.
Frequently asked questions about Ierissos
When is the best time to visit Ierissos?
The best time to visit Ierissos 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 Ierissos?
The sea temperature in Ierissos ranges from 13.2 °C in March to 26.6 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
Can you swim in Ierissos in October?
Yes. In October the sea averages 21.0 °C – refreshing for a swim.
What is the warmest month in Ierissos?
July is the warmest month, with average highs of 32 °C and nights around 23 °C. January is the coolest month at 11 °C.
When does it rain most in Ierissos?
The wettest month is December with 88 mm of precipitation. The driest month is August with 23 mm.
How many hours of sunshine does Ierissos get?
Ierissos gets around 2,580 hours of sunshine a year. The sunniest month is July with 11.2 hours a day; in December there are 3.1 hours a day.
What time zone is Ierissos in?
Ierissos is on UTC+2 in January and UTC+3 in July.
How long is the flight from London to Ierissos?
A nonstop flight from London to Ierissos takes about 3 h 10 min, for a straight-line distance of about 2,230 km.
Which school holidays are best for Ierissos?
Ierissos has its best school-holiday weather during the summer holidays (score 94) and its weakest during the Christmas holidays (score 14). Holiday ratings (0–100): Easter holidays 29, May half-term 79, summer holidays 94, October half-term 57, Christmas holidays 14.