Frost Dates for HORNAFJORDUR, Iceland
Elevation: 2 m
Frost Dates
Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide.
May 11
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date.
October 9
30% Probability
Only 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
May 17
First Fall Frost
October 3
Hard Freeze (−2°C)
Last Spring Hard Freeze
April 22
First Fall Hard Freeze
October 24
Growing Season
151 Days
May 11 to October 9
USDA Hardiness Zone
Hardiness 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 8a
Avg. annual minimum: −12 to −9°C
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cfc
Subpolar Oceanic
Cool year-round with very mild winters but short, cool summers. Growing seasons are short and limited to cold-hardy crops. Root vegetables and leafy greens are the most reliable choices.
Temperature
-5°
0°
5°
10°
15°
Avg High
Avg Temp
Avg Low
Light Frost (0°C)
Hard Frost (−2°C)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 2° | 0° | -2° |
| February | 2° | 0° | -2° |
| March | 2° | 0° | -2° |
| April | 4° | 2° | 0° |
| May | 7° | 5° | 3° |
| June | 10° | 8° | 6° |
| July | 12° | 10° | 8° |
| August | 12° | 10° | 8° |
| September | 10° | 8° | 6° |
| October | 6° | 4° | 2° |
| November | 3° | 2° | 0° |
| December | 2° | 0° | -2° |
Precipitation
0 mm
75 mm
150 mm
225 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 211 |
| February | 178 |
| March | 157 |
| April | 132 |
| May | 94 |
| June | 102 |
| July | 104 |
| August | 137 |
| September | 211 |
| October | 226 |
| November | 198 |
| December | 203 |
Sunrise / Sunset
Daylight
Longest: 20h 34m · Shortest: 3h 26m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 9:36 AM | 2:24 PM | 4h 48m |
| February | 7:58 AM | 4:02 PM | 8h 05m |
| March | 6:23 AM | 5:37 PM | 11h 13m |
| April | 4:39 AM | 7:21 PM | 14h 41m |
| May | 3:00 AM | 8:60 PM | 17h 60m |
| June | 1:46 AM | 10:14 PM | 20h 28m |
| July | 2:20 AM | 9:40 PM | 19h 20m |
| August | 3:57 AM | 8:03 PM | 16h 05m |
| September | 5:42 AM | 6:18 PM | 12h 37m |
| October | 7:22 AM | 4:38 PM | 9h 15m |
| November | 9:05 AM | 2:55 PM | 5h 51m |
| December | 10:15 AM | 1:45 PM | 3h 31m |
Nearby Stations
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