Jamestown weather in October

In October, Jamestown sees average daytime highs of 20°C and overnight lows near 19°C, with 1 mm of rain across 0.1 wet days and about 12.4 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 7% of the time in October, and the air most often feels comfortable.

Daylight stretches from about 12 h 06 min at the start of October to 12 h 36 min by month's end. Set against the rest of the year, October is Jamestown's 11th-clearest and 3rd-windiest month. For the whole year in context, see Jamestown's year-round climate.

Daytime high
20°
11th warmest
Overnight low
19°
2nd coldest
Rainfall
1 mm
0.1 wet days
Daylight
12 h 24 min
5:57 AM – 6:19 PM
Cloud cover
69%
11th clearest
Wind
28 km/h
3rd windiest
Solar energy
5.94 kWh/m²
Travel score
7.4
out of 10

Jamestown is capital of Saint Helena.

Density
177/km²
people per km²
Founded
1659

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical October day in Jamestown reaches about 20°C in the afternoon and slips back to 19°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 20°C. Set against its neighbours, October runs on par with September and on par with November.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12019
22019
32019
42019
52019
62019
72019
82019
92019
102019
112019
122019
132019
142019
152019
162019
172019
182019
192019
202019
212019
222019
232019
242019
252019
262019
272019
282019
292019
302019
312019

Jamestown weather by month

How October compares with the rest of the year at a glance. October is the 11th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 22°20.412.88.6
Feb24° / 23°30.612.58.8
Mar24° / 24°51.412.18.7
Apr24° / 23°30.611.78.7
May23° / 22°41.111.38.3
Jun22° / 21°51.111.17.9
Jul21° / 20°30.511.17.7
Aug20° / 19°20.311.57.4
Sep20° / 19°10.111.97.3
Oct20° / 19°10.112.47.4
Nov20° / 20°1012.77.7
Dec21° / 21°1012.98.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 24% of October, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22971
32971
42971
52971
63070
73070
82971
93070
103070
113070
122971
132971
142971
152971
162872
172872
182872
192872
202971
213070
223070
233169
243268
253466
263466
273664
283961
293961
304159
314258

Chance of precipitation in October

Any precipitation

Jamestown gets around 1 mm of rain over 0.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 0% and peaks near 0% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the comfortable band about 60% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1170290
2169300
3168310
4168310
5167320
6265330
7264340
8263350
9262360
10261370
11260380
12259390
13258400
14258400
15159400
16158410
17158410
18158410
19157420
20157420
21156430
22057430
23057430
24057430
25057430
26057430
27056440
28056440
29056440
30055450
31054451

Wind in October

Winds average 28 km/h in October.

Across October, daily wind ranges from about 27 km/h on the calmest days to 28 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
128breezy
228breezy
328breezy
428breezy
528breezy
628breezy
728breezy
828breezy
928breezy
1028breezy
1128breezy
1228breezy
1328breezy
1428breezy
1528breezy
1628breezy
1728breezy
1828breezy
1928breezy
2028breezy
2128breezy
2228breezy
2328breezy
2427breezy
2527breezy
2627breezy
2727breezy
2827breezy
2927breezy
3027breezy
3127breezy

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 06 min at the start of October to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over October. Sunrise moves from 6:08 AM to 5:49 AM, and sunset from 6:16 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:086:16
212.26:076:16
312.26:066:16
412.26:056:17
512.26:056:17
612.26:046:17
712.26:036:17
812.26:026:17
912.36:026:17
1012.36:016:18
1112.36:006:18
1212.36:006:18
1312.35:596:18
1412.35:586:18
1512.45:586:19
1612.45:576:19
1712.45:566:19
1812.45:566:19
1912.45:556:20
2012.45:556:20
2112.45:546:20
2212.55:536:20
2312.55:536:21
2412.55:526:21
2512.55:526:21
2612.55:516:22
2712.55:516:22
2812.55:516:22
2912.55:506:23
3012.65:506:23
3112.65:496:24

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.94 kWh/m².

For context, solar energy here swings from a low near 3.89 kWh/m² to a high of 7.11 kWh/m² in January across the year — October's 5.94 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
176.0Bright
186.0Bright
196.0Bright
206.0Intense
216.0Intense
226.0Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.2Intense
286.2Intense
296.2Intense
306.3Intense
316.3Intense
Planning a trip in October

Is October a good time to visit Jamestown?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.4
Sightseeing
10th-best month of the year
3.7
Beach & pool
11th-best month of the year

October is one of the better times to visit Jamestown for general sightseeing.

What to pack for Jamestown in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Jamestown sees daytime highs around 20°C and nights near 19°C. Worth packing: sun protection and a windbreaker.

sun protectiona windbreaker

Sea temperature near Jamestown in October

The nearest coast averages about 20°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in March at about 25°C and coldest in October near 20°C.

The water stays above 20°C all year — warm enough for a swim any month.

18°20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb24Warm
Mar25Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep20Refreshing
Oct20Refreshing
Nov21Refreshing
Dec22Refreshing

UV index in Jamestown in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jamestown peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 20UV 14Jun 21UV 8
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar13Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep10Very high
Oct11Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is Jamestown?

Jamestown sits at 15.9°S, 5.7°W, 10 m above sea level, in Saint Helena. The nearest listed city is Tômbua, 1,878 km away.

Topography around Jamestown

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Jamestown.

Within 3 km, the terrain around Jamestown has significant variations in elevation — a maximum elevation change of 581 m around an average of 155 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 795 m; within 80 km, large variations in elevation — a maximum elevation change of 766 m.

The land around Jamestown is covered by water (44%) and shrubs (27%) within 3 km, water (85%) within 16 km, and water (97%) within 80 km.

3 km
581 m
16 km
795 m
80 km
766 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Tômbua 1,878 km · Mossamedes 1,915 km · Virei 1,997 km · Camucuio 2,045 km · Dombe Grande 2,053 km · Lubango 2,062 km · Baía Farta 2,071 km · Navegantes 2,092 km

Saint Helena travel facts

Power plugs
Type G
230 V · 50 Hz

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Jamestown (-15.9249°, -5.7182°, elevation 10 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).