Climate Insights for Half Tree Hollow

, Saint Helena, Saint Helena

Hottest
March
25°C peak
Coldest
October
19°C low
Wettest
March
18mm rain
Best to Visit
January, February, March
Mild temps & low rain

Climate Overview

The climate in Half Tree Hollow is warm and mild. The average annual temperature is 22°C and approximately 145mm of precipitation falls per year. March is the wettest month, receiving around 18mm of rainfall. Half Tree Hollow is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: March, April, February. The coldest months are October, September, August, when temperatures can drop to 19°C.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 23° Average: 23° Min: 22° Feb Max: 24° Average: 24° Min: 23° Mar Max: 25° Average: 24° Min: 24° Apr Max: 24° Average: 24° Min: 23° May Max: 23° Average: 23° Min: 23° Jun Max: 22° Average: 22° Min: 21° Jul Max: 21° Average: 21° Min: 20° Aug Max: 20° Average: 20° Min: 20° Sep Max: 20° Average: 20° Min: 19° Oct Max: 20° Average: 19° Min: 19° Nov Max: 20° Average: 20° Min: 20° Dec Max: 21° Average: 21° Min: 21°
Max
Average
Min

Half Tree Hollow has relatively stable temperatures year-round, staying within a 6°C range. March is the warmest month, though highs remain moderate at 25°C with a mean of 24°C. October is the coolest month, with minimum temperatures around 19°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.

Precipitation

0mm 25mm 50mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 12mm Feb Precipitation: 12mm Mar Precipitation: 18mm Apr Precipitation: 14mm May Precipitation: 12mm Jun Precipitation: 12mm Jul Precipitation: 12mm Aug Precipitation: 13mm Sep Precipitation: 12mm Oct Precipitation: 10mm Nov Precipitation: 9mm Dec Precipitation: 9mm
Precipitation

Half Tree Hollow is a quite dry location, receiving approximately 145mm of precipitation annually, which averages out to around 12mm per month. The wettest month is March, averaging 18mm of rainfall. April and August also tend to see above-average precipitation. The driest month is December, with just 9mm. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

Wind

0km/h 5km/h 10km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 7km/h Feb Wind Speed: 7km/h Mar Wind Speed: 7km/h Apr Wind Speed: 7km/h May Wind Speed: 7km/h Jun Wind Speed: 7km/h Jul Wind Speed: 7km/h Aug Wind Speed: 8km/h Sep Wind Speed: 8km/h Oct Wind Speed: 8km/h Nov Wind Speed: 7km/h Dec Wind Speed: 7km/h
Wind Speed

Half Tree Hollow is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Sep 23
Summer
Dec 21
Autumn
Mar 20

91 days until Spring

It is currently winter in Half Tree Hollow, which began on June 21, 2026. Half Tree Hollow is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in March at around 25°C, while the coldest stretch bottoms out in October near 19°C. Spring is next, beginning on September 23, 2026 — 91 days from now.

Spring

Temperatures range from 19 to 20°C. Precipitation is minimal, with only around 31mm for the entire season. Winds are generally light, averaging 8km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 21 to 24°C. Precipitation is minimal, with only around 33mm for the entire season. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 23 to 25°C. Precipitation is minimal, with only around 44mm for the entire season. Winds are generally light, averaging 7km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from 20 to 22°C. Precipitation is minimal, with only around 37mm for the entire season. Winds are generally light, averaging 8km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 23°
Feb 24°
Mar 24°
Apr 24°
May 23°
Jun 22°
Jul 21°
Aug 20°
Sep 20°
Oct 19°
Nov 20°
Dec 21°

The best time to visit Half Tree Hollow is during January, February, March, April, May, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 12mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

Monthly Climate Data

The table below shows monthly climate averages for Half Tree Hollow based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
22 °C
23 °C
7 km/h
12 mm
0 cm
Feb
23 °C
24 °C
7 km/h
12 mm
0 cm
Mar
24 °C
25 °C
7 km/h
18 mm
0 cm
Apr
23 °C
24 °C
7 km/h
14 mm
0 cm
May
23 °C
23 °C
7 km/h
12 mm
0 cm
Jun Current
21 °C
22 °C
7 km/h
12 mm
0 cm
Jul
20 °C
21 °C
7 km/h
12 mm
0 cm
Aug
20 °C
20 °C
8 km/h
13 mm
0 cm
Sep
19 °C
20 °C
8 km/h
12 mm
0 cm
Oct
19 °C
20 °C
8 km/h
10 mm
0 cm
Nov
20 °C
20 °C
7 km/h
9 mm
0 cm
Dec
21 °C
21 °C
7 km/h
9 mm
0 cm
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