Frost Dates for ASCENSION ISLAND, Saint Helena

Elevation: 82 m

Frost Dates

This location never reaches freezing temperatures, so you can plant year-round!

In tropical and subtropical climates, the main challenge isn’t frost — it’s heat and humidity. Learn more about gardening in tropical climates.

-7.97°N, -14.40°W © OpenStreetMap

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 13a

Avg. annual minimum: 16 to 18°C

Learn more

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

BWh Hot Desert

Very hot and extremely dry with minimal rainfall. Irrigation is essential for any gardening. Heat-tolerant crops and desert-adapted plants thrive; shade structures help in peak summer.

Köppen climate map

Temperature

20° 25° 30°
24°
High: 25°C
Avg: 24°C
Low: 24°C
Jan
25°
High: 26°C
Avg: 25°C
Low: 25°C
Feb
26°
High: 26°C
Avg: 26°C
Low: 26°C
Mar
26°
High: 27°C
Avg: 26°C
Low: 26°C
Apr
26°
High: 26°C
Avg: 26°C
Low: 25°C
May
25°
High: 25°C
Avg: 25°C
Low: 24°C
Jun
24°
High: 24°C
Avg: 24°C
Low: 23°C
Jul
23°
High: 23°C
Avg: 23°C
Low: 23°C
Aug
23°
High: 23°C
Avg: 23°C
Low: 22°C
Sep
23°
High: 23°C
Avg: 23°C
Low: 22°C
Oct
23°
High: 23°C
Avg: 23°C
Low: 23°C
Nov
24°
High: 24°C
Avg: 24°C
Low: 23°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 10 mm
0 mm
0.0 mm
Jan
0 mm
0.0 mm
Feb
0 mm
0.0 mm
Mar
5 mm
5.1 mm
Apr
0 mm
0.0 mm
May
0 mm
0.0 mm
Jun
0 mm
0.0 mm
Jul
0 mm
0.0 mm
Aug
0 mm
0.0 mm
Sep
0 mm
0.0 mm
Oct
0 mm
0.0 mm
Nov
0 mm
0.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec12.5h12.5h12h12h11.5h11.5h11.5h11.5h12h12h12.5h12.5h
Jan: 5:48 AM – 6:12 PM · 12h 25m
Feb: 5:52 AM – 6:08 PM · 12h 15m
Mar: 5:58 AM – 6:02 PM · 12h 03m
Apr: 6:05 AM – 5:55 PM · 11h 49m
May: 6:11 AM – 5:49 PM · 11h 38m
Jun: 6:14 AM – 5:46 PM · 11h 32m
Jul: 6:13 AM – 5:47 PM · 11h 35m
Aug: 6:08 AM – 5:52 PM · 11h 44m
Sep: 6:01 AM – 5:59 PM · 11h 58m
Oct: 5:55 AM – 6:05 PM · 12h 11m
Nov: 5:49 AM – 6:11 PM · 12h 22m
Dec: 5:46 AM – 6:14 PM · 12h 28m
Daylight Longest: 12h 28m · Shortest: 11h 32m

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