St. Thomas weather in October

In October, St. Thomas sees average daytime highs of 14°C and overnight lows near 8°C, with 86 mm of precipitation across 11.5 wet days and about 10.8 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 11°C by the end. The sky is clear or mostly clear about 27% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 10 h 06 min by month's end. Set against the rest of the year, October is St. Thomas's 6th-clearest and 4th-windiest month. For the whole year in context, see St. Thomas's year-round climate.

Daytime high
14°
6th warmest
Overnight low
7th coldest
Precipitation
86 mm
11.5 wet days
Daylight
10 h 48 min
6:45 AM – 5:34 PM
Cloud cover
62%
6th clearest
Wind
18 km/h
4th windiest
Solar energy
2.89 kWh/m²
Travel score
4.0
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 17°C in the first days to 11°C by the end.

A typical October day in St. Thomas reaches about 14°C in the afternoon and slips back to 8°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 19°C. Set against its neighbours, October runs about 7°C cooler than September and about 7°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11811
21711
31711
41711
51710
61610
71610
81610
9169
10169
11159
12159
13159
14158
15148
16148
17148
18148
19137
20137
21137
22137
23127
24126
25126
26126
27116
28116
29115
30115
31105

How October really feels in St. Thomas

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

St. Thomas weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -7°7511.58.39.20.0
Feb-1° / -7°589.4710.30.0
Mar / -3°7310.34.911.60.1
Apr10° / 9511.71.713.12.1
May17° / 10°9412.1014.45.1
Jun23° / 16°9911.7015.16.6
Jul25° / 19°9612014.86.6
Aug25° / 18°8210.2013.77.0
Sep21° / 14°849.4012.36.6
Oct14° / 8611.50.110.84.0
Nov / 8110.82.69.61.0
Dec / -3°7411.57.18.90.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45149
55050
64951
74951
84852
94852
104753
114852
124753
134654
144456
154357
164357
174258
184159
194060
203961
213961
223862
233763
243664
253664
263664
273565
283565
293565
303466
313466

Chance of precipitation in October

Any precipitationSnow

St. Thomas gets around 86 mm of rain and snow over 11.5 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 36% and peaks near 39% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1360
2360
3360
4350
5350
6350
7350
8340
9340
10340
11340
12340
13340
14340
15350
16360
17370
18370
19380
20390
21390
22390
23391
24391
25391
26391
27381
28381
29371
30371
31362

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1701983
2711883
3731773
4741763
5751663
6771652
7781552
8791452
9811342
10811342
11831232
12851131
13861031
14871021
1588921
1689911
1791810
1891810
1992710
2093700
2194600
2294600
2395500
2495500
2595500
2696400
2796400
2896400
2997300
3097300
3197300

Wind in October

Winds average 18 km/h in October.

Across October, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 6:27 AM to 7:04 AM, and sunset from 6:00 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:276:00
211.56:295:58
311.46:305:56
411.46:315:55
511.36:325:53
611.36:335:51
711.26:355:49
811.26:365:48
911.16:375:46
1011.16:385:44
1111.16:395:42
1211.06:415:41
1311.06:425:39
1410.96:435:37
1510.96:445:36
1610.86:455:34
1710.86:475:33
1810.76:485:31
1910.76:495:29
2010.66:505:28
2110.66:525:26
2210.56:535:25
2310.56:545:23
2410.46:555:22
2510.46:575:20
2610.46:585:19
2710.36:595:18
2810.37:005:16
2910.27:025:15
3010.27:035:14
3110.17:045:12

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.89 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 6.64 kWh/m² in June across the year — October's 2.89 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.6Moderate
33.6Moderate
43.5Moderate
53.5Moderate
63.4Moderate
73.4Moderate
83.3Moderate
93.3Moderate
103.2Moderate
113.2Moderate
123.1Moderate
133.1Moderate
143.0Moderate
153.0Moderate
162.9Moderate
172.8Moderate
182.8Moderate
192.7Moderate
202.7Moderate
212.6Moderate
222.6Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.4Moderate
272.4Moderate
282.4Moderate
292.3Moderate
302.3Moderate
312.3Moderate
Planning a trip in October

Is October a good time to visit St. Thomas?

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

4.0
Sightseeing
6th-best month of the year
0.4
Beach & pool
6th-best month of the year

October is a reasonable time to visit St. Thomas for sightseeing.

What to pack for St. Thomas in October

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

In October, St. Thomas sees daytime highs around 14°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near St. Thomas in October

The nearest coast averages about 16°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 km away) is warmest in August at about 23°C and coldest in February near 1°C.

It's comfortable for a long swim from Jul 5 to Sep 20 — about 2.6 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr4Bracing
May10Bracing
Jun17Cool
Jul22Refreshing
Aug23Refreshing
Sep21Refreshing
Oct16Cool
Nov10Bracing
Dec5Bracing

UV index in St. Thomas in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in St. Thomas peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is St. Thomas?

St. Thomas sits at 42.8°N, 81.2°W, 232 m above sea level, in Canada. The nearest listed city is London, 24 km away.

Topography around St. Thomas

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

Within 3 km, the terrain around St. Thomas has only modest variations in elevation — a maximum elevation change of 65 m around an average of 233 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 125 m; within 80 km, significant variations in elevation — a maximum elevation change of 251 m.

The land around St. Thomas is covered by trees (35%) and artificial surfaces (33%) within 3 km, cropland (60%) and trees (20%) within 16 km, and cropland (49%) and water (33%) within 80 km.

3 km
65 m
16 km
125 m
80 km
251 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: London 24 km · Tillsonburg 38 km · Strathroy 41 km · Woodstock 53 km · Norfolk County 65 km · Stratford 69 km · Brant 79 km · Brantford 84 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

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 St. Thomas (42.7736°, -81.1804°, elevation 232 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).