Frost Dates for PORTOROZ-LETALISCE, Slovenia

Elevation: 24 m

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. February 18
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. December 19
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.

Last Spring Frost February 25
First Fall Frost December 14

Hard Freeze (−2°C)

Last Spring Hard Freeze February 5
First Fall Hard Freeze December 19
45.50°N, 13.60°W © OpenStreetMap

Growing Season

305 Days February 18 to December 19

USDA Hardiness Zone iHardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.

Zone 9b

Avg. annual minimum: −4 to −1°C

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

0° 10° 20° 30°
6°
High: 8°C
Avg: 6°C
Low: 3°C
Jan
6°
High: 9°C
Avg: 6°C
Low: 3°C
Feb
9°
High: 12°C
Avg: 9°C
Low: 6°C
Mar
13°
High: 15°C
Avg: 13°C
Low: 10°C
Apr
17°
High: 20°C
Avg: 17°C
Low: 14°C
May
21°
High: 24°C
Avg: 21°C
Low: 18°C
Jun
24°
High: 27°C
Avg: 24°C
Low: 21°C
Jul
24°
High: 27°C
Avg: 24°C
Low: 21°C
Aug
20°
High: 22°C
Avg: 20°C
Low: 17°C
Sep
16°
High: 18°C
Avg: 16°C
Low: 13°C
Oct
11°
High: 13°C
Avg: 11°C
Low: 9°C
Nov
7°
High: 9°C
Avg: 7°C
Low: 5°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 50 mm 100 mm 150 mm
76 mm
76.2 mm
Jan
76 mm
76.2 mm
Feb
74 mm
73.7 mm
Mar
102 mm
101.6 mm
Apr
99 mm
99.1 mm
May
84 mm
83.8 mm
Jun
66 mm
66.0 mm
Jul
89 mm
88.9 mm
Aug
152 mm
152.4 mm
Sep
150 mm
149.9 mm
Oct
165 mm
165.1 mm
Nov
109 mm
109.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:33 AM – 4:27 PM · 8h 53m
Feb: 6:56 AM – 5:04 PM · 10h 09m
Mar: 6:11 AM – 5:49 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 18m
May: 4:39 AM – 7:21 PM · 14h 42m
Jun: 4:16 AM – 7:44 PM · 15h 28m
Jul: 4:25 AM – 7:35 PM · 15h 09m
Aug: 5:02 AM – 6:58 PM · 13h 56m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 41m
Nov: 7:23 AM – 4:37 PM · 9h 14m
Dec: 7:44 AM – 4:16 PM · 8h 32m
Daylight Longest: 15h 30m · Shortest: 8h 31m

Nearby Stations

GODNJE, Slovenia March 20 - November 22 BILJE, Slovenia March 15 - November 26 POSTOJNA, Slovenia April 7 - November 8 VOJSKO, Slovenia April 23 - October 25 RIJEKA, Croatia March 15 - November 25 BABNO POLJE, Slovenia April 14 - November 2

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