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Slovenia

Sežana weather & best time to visit

Nature escape

Sežana at a glance

Best time
Apr – Oct
Warmest month
Jul · 28°
Sunshine a year
2,260 h
Rain a year
1,513 mm
Climate
Temperate
Time zone
UTC+1 / UTC+2
Elevation
370 m

Climate in Sežana

Sežana has a temperate climate with warm summers and cool winters. July is the warmest month with average highs of 28 °C, while January is the coolest at 7 °C. With around 2,260 hours of sunshine a year, Sežana is sunny; July is the sunniest month with 9.2 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Sežana

The best time to visit Sežana is from April to October. For sightseeing, day trips and hiking, conditions are most comfortable in April, in June and in September. The wettest month is November with 190 mm of precipitation.

Sežana through the seasons

How the weather changes over the seasons, with averages for each.

Sežana in spring

Mar – May

67

Good

  • 13–22 °C by day
  • 6.7 h of sun a day
  • 36 rainy days in all

Sežana in summer

Jun – Aug

78

Good

  • 26–28 °C by day
  • 8.7 h of sun a day
  • 33 rainy days in all

Sežana in autumn

Sep – Nov

60

Good

  • 12–23 °C by day
  • 5.0 h of sun a day
  • 37 rainy days in all

Sežana in winter

Dec – Feb

22

Poor

  • 7–8 °C by day
  • 4.3 h of sun a day
  • 29 rainy days in all

Which month for what?

Beach & swimming

No sea nearby

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

Apr, Jun, Sep

15–28 °C and not too much rain

Rainy months

Nov

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 Sežana for you.

Sunshine
Little rain

Your best months: May, September

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Weather in October

Weather in October

68

Holiday weather in October

Good

Best time to visit: April – October

A typical day in October

  1. Morning, 08:00: about 11°
  2. Midday, 13:00: about 17°
  3. Afternoon, 16:00: about 17°
  4. Evening, 20:00: about 14°
  5. Night, 23:00: about 12°

07:1918:21

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 07:01–08:00 · evening 17:40–18:39
Blue hour
Morning 06:49–07:01 · evening 18:39–18:51

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 Sežana compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs fall from about 20° at the start of the month to 15° at the end. The days get 1.5 h shorter.

Early or late October?
October1 Oct31 Oct
Daytime high20°15°
Night-time low12°8°
Daylight11.8 h10.3 h

What is the weather like in Sežana in October?

In October, Sežana is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. Expect around 4.9 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 171 mm in total. All in all, October is a good month for a holiday in Sežana.

More details for October

Daylight
11 h 2 min07:19 – 18:21
UV index
3 · moderateclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
16 km/haverage daily peakAll months
Cloud cover
59 %on averageAll months
Hot days
0 days30 °C or moreAll months
Snow days
0 days1 cm or more of fresh snowAll months
Time zone
UTC+2offset from UTC

How the score comes together

  • Temperatureweight 50 %100 %
  • Sunshineweight 20 %32 %
  • Few rainy daysweight 30 %38 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.

What to pack in October

  • A jumper for the evenings
  • Rain jacket or umbrella

Compare two months in Sežana

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

vs

June has the better holiday weather in Sežana: score 82 against 68. In June, days are 9 °C warmer than in October. June has 2 fewer rainy days. The sun shines 4 hours longer a day in June.

October vs June, Sežana
MonthOctoberJune
Holiday weather score6882better
Daytime high17°26°
Night-time low10°16°
Sunshine4.9 h8.4 hbetter
Rainy days1311better
Rainfall171 mm101 mmbetter
Muggy days0better2

Based on the climate averages 1996–2025.

Sežana month by month

The typical weather for every month at a glance.

20January7° · 4.0 h

In January, Sežana is cold: daytime highs average 7 °C, and nights cool down to about 1 °C. Expect around 4.0 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 101 mm in total. Snow falls on about 2 days. All in all, January is not an ideal month for a holiday in Sežana.

Sežana in January
28February8° · 5.2 h

In February, Sežana is cold: daytime highs average 8 °C, and nights cool down to about 1 °C. Expect around 5.2 hours of sunshine a day. Rain falls on about 9 days, adding up to 98 mm. Snow falls on about 2 days. All in all, February is not an ideal month for a holiday in Sežana.

Sežana in February
52March13° · 5.9 h

In March, Sežana is cool: daytime highs average 13 °C, and nights cool down to about 4 °C. Expect around 5.9 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 104 mm in total. All in all, March is a so-so month for a holiday in Sežana.

Sežana in March
74April17° · 6.4 h

In April, Sežana is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. Expect around 6.4 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 111 mm in total. All in all, April is a good month for a holiday in Sežana.

Sežana in April
75May22° · 7.8 h

In May, Sežana is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. The sun shines for around 7.8 hours a day. Rain is frequent, with about 14 rainy days and 128 mm in total. All in all, May is a good month for a holiday in Sežana.

Sežana in May
82June26° · 8.4 h

In June, Sežana is warm: daytime highs average 26 °C, and nights cool down to about 16 °C. The sun shines for around 8.4 hours a day. Rain is frequent, with about 11 rainy days and 101 mm in total. All in all, June is an excellent month for a holiday in Sežana.

Sežana in June
75July28° · 9.2 h

In July, Sežana is hot: daytime highs average 28 °C, and nights cool down to about 18 °C. With around 9.2 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 12 rainy days and 99 mm in total. On about 10 days the thermometer climbs to 30 °C or more. All in all, July is a good month for a holiday in Sežana.

Sežana in July
76August28° · 8.6 h

In August, Sežana is hot: daytime highs average 28 °C, and nights cool down to about 18 °C. The sun shines for around 8.6 hours a day. Rain is frequent, with about 10 rainy days and 113 mm in total. On about 10 days the thermometer climbs to 30 °C or more. All in all, August is a good month for a holiday in Sežana.

Sežana in August
77September23° · 6.6 h

In September, Sežana is warm: daytime highs average 23 °C, and nights cool down to about 14 °C. The sun shines for around 6.6 hours a day. Rain is frequent, with about 11 rainy days and 171 mm in total. All in all, September is a good month for a holiday in Sežana.

Sežana in September
68October17° · 4.9 h

In October, Sežana is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. Expect around 4.9 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 171 mm in total. All in all, October is a good month for a holiday in Sežana.

Sežana in October
35November12° · 3.5 h

In November, Sežana is cool: daytime highs average 12 °C, and nights cool down to about 6 °C. The sun is scarce, with only about 3.5 hours a day. Rain is frequent, with about 13 rainy days and 190 mm in total. All in all, November is not an ideal month for a holiday in Sežana.

Sežana in November
19December8° · 3.6 h

In December, Sežana is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 3.6 hours a day. Rain is frequent, with about 10 rainy days and 124 mm in total. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Sežana.

Sežana in December

Climate in detail

Year & climate tableWarmest in July: 28°

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Sežana

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 (1°), the warmest in August (18°). Nights are pleasant for sleeping (15 to 20 °C) from June to August. Nights fall below 8 °C on average from November to March, so the room should be heated.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 17°Night 10°
DayNight
MonthScoreDayNightSunRain daysRain mm
JanuaryJan207°1°4.0 h10101
FebruaryFeb288°1°5.2 h998
MarchMar5213°4°5.9 h10104
AprilApr7417°8°6.4 h12111
MayMay7522°12°7.8 h14128
JuneJun8226°16°8.4 h11101
JulyJul7528°18°9.2 h1299
AugustAug7628°18°8.6 h10113
SeptemberSep7723°14°6.6 h11171
OctoberOct6817°10°4.9 h13171
NovemberNov3512°6°3.5 h13190
DecemberDec198°2°3.6 h10124

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

45.71° N, 13.87° E · 370 m · Europe/Ljubljana

Sunshine2,260 hours a year
Sunshine

Sunshine hours in Sežana

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

Per year
2,260 hours
Sunniest month
Jul · 9.2 h a day
Least sunshine
Nov · 3.5 h a day
OctoberSunshine 4.9 hDaylight 11.0 hShare of daylight 45 %
SunshineDaylight

In October, the sun shines for about 4.9 of 11.0 hours of daylight in Sežana, 45 % 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.

Rain1,513 mm a year, most in November
Rain

Rain in Sežana: 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.

Per year
1,513 mm on 135 days
Wettest month
Nov · 190 mm
Driest month
Feb · 98 mm
OctoberRainy days 13Rainfall 171 mm

In October, Sežana has about 13 rainy days with 171 mm of rain in total.

UV indexUp to 9 in June
Sun protection

UV index in Sežana

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October
3 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.

The sun is strongest in June (UV 9).

Minutes until sunburn in October

Very fair skin
about 45 min
Fair skin
about 55 min
Light brown skin
about 80 min
Olive skin
about 100 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 & cloudsWindiest in November: 17 km/h
Wind & clouds

Wind and clouds in Sežana

How breezy and how cloudy Sežana 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.

Year average
15 km/h · gentle breeze
Windiest month
Nov · 17 km/h
Calmest month
Jun · 14 km/h
OctoberWind 16 km/hBeaufort 3

In October, the wind in Sežana typically peaks at 16 km/h during the day: Beaufort 3, gentle breeze.

Clouds

Average share of the sky covered by cloud, day and night.

Year average
55 % · variable cloud
Clearest month
Aug · 44 %
Cloudiest month
Nov · 66 %
OctoberCloud cover 59 %Sunshine 4.9 h

In October, cloud covers on average 59 % of the sky over Sežana: variable cloud, with about 4.9 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.

Heat & humidity23 days of 30° or more a year
Heat & humidity

Heat and humidity in Sežana

How often the day gets hot in Sežana (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.

Hot days a year
23 days
Hottest month
Jul · 28 °C
Hot months
none

Heat calendar

  • pleasant
  • some hot or muggy days
  • often muggy
  • often hot
  • hot and muggy
OctoberHot days (30 °C+) 0Daytime high 17 °C

In October, Sežana has about 0 hot days, with an average daytime high of 17 °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

SnowChance of snow up to 28% in February
Snow

Snow in Sežana

Snow is possible in Sežana, 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 days a year
8 days
Fresh snow a year
31 cm
Snow possible
Dec – Feb

Snow calendar

  • hardly any
  • possible
  • likely
  • very likely
OctoberDays with fresh snow 0Fresh snow 0 cmChance of snow 1 / 100

In October, it hardly ever snows in Sežana.

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 Sežana

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

Sežana 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.

Sežana has its best school-holiday weather during May half-term (score 76) and its weakest during the Christmas holidays (score 20).

  • Easter holidays

    Mar – Apr

    67

    Good

    • 16 °C by day
    • 6.3 h of sun a day
    • 11 rainy days a month
  • May half-term

    May – Jun

    76

    GoodBest holidays

    • 22 °C by day
    • 7.9 h of sun a day
    • 13 rainy days a month
  • Summer holidays

    Jul – Aug

    76

    Good

    • 28 °C by day
    • 8.8 h of sun a day
    • 11 rainy days a month
  • October half-term

    Oct

    68

    Good

    • 17 °C by day
    • 4.9 h of sun a day
    • 13 rainy days a month
  • Christmas holidays

    Dec – Jan

    20

    Poor

    • 7 °C by day
    • 3.8 h of sun a day
    • 10 rainy days a month

    Keep in mind: Snow

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
about 2 h
Distance
1,230 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.

Good to know: Slovenia

Currency
Euro (EUR)
Language
Slovenian
Sockets
Type C, F · 230 V
Traffic
Drives on the right
Dialling code
+386
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

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Sežana compared

Put Sežana side by side with another destination.

Nearby:
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Sežana vs Trieste

In October Trieste has the better holiday weather (score 73 vs 68). During the day Trieste is 2 °C warmer than Sežana. Trieste gets one more hour of sunshine a day.

Sežana vs Trieste, in October
in OctoberSežanaTrieste
Holiday weather score6873
Daytime high17°19°
Seano sea nearby19°
Sunshine5 h6 h
Rainy days1312
Best timeApr – OctApr – Sep

Through the year

OctoberSežana 17°Trieste 19°
SežanaTrieste
Go to Trieste
Best places in the country
Ranking

Slovenia in October: the best places

In October, Sežana ranks 9 of 28 destinations in this country.

  1. Brežice17°74
  2. 2Sevnica17°73
  3. 3Ptuj17°73
  4. 4Murska Sobota16°72
  5. 5Lendava17°72
  6. 6Tolmin18°70
  7. 7Kobarid17°70
  8. 8Dravograd16°69
  9. 9SežanaThis page17°68
All destinations: Slovenia
Places nearby4 places within 28 km

Near Sežana

Other destinations close by.

Places with a similar climatee.g. Bellinzona and Cuneo

Places with a climate like Sežana

Destinations whose weather through the year is closest to Sežana's – good alternatives.

  1. 88 % similar69BellinzonaSwitzerland17°Best time: Mar – Jun, Aug – Oct
  2. 88 % similar66CuneoItaly16°Best time: Apr – Jun, Sep – Oct
  3. 86 % similar69MendrisioSwitzerland17°Best time: Mar – Oct
  4. 86 % similar75L'AquilaItaly19°Best time: May – Oct

Frequently asked questions about Sežana

When is the best time to visit Sežana?

The best time to visit Sežana is from April to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

What is the warmest month in Sežana?

July is the warmest month, with average highs of 28 °C and nights around 18 °C. January is the coolest month at 7 °C.

When does it rain most in Sežana?

The wettest month is November with 190 mm of precipitation. The driest month is February with 98 mm.

How many hours of sunshine does Sežana get?

Sežana gets around 2,260 hours of sunshine a year. The sunniest month is July with 9.2 hours a day; in November there are 3.5 hours a day.

What time zone is Sežana in?

Sežana is on UTC+1 in January and UTC+2 in July.

How long is the flight from London to Sežana?

A nonstop flight from London to Sežana takes about 2 h, for a straight-line distance of about 1,230 km.

Which school holidays are best for Sežana?

Sežana has its best school-holiday weather during May half-term (score 76) and its weakest during the Christmas holidays (score 20). Holiday ratings (0–100): Easter holidays 67, May half-term 76, summer holidays 76, October half-term 68, Christmas holidays 20.