Santo Tomé in Spring
In spring (September, October and November), Santo Tomé sees average daytime highs around 27°C and overnight lows near 16°C, with 531 mm of rain over about 32 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs climb from about 24°C in early September to 30°C by late November. The sky is clear or mostly clear about 41% of the time across spring, and the air most often feels dry.
Spring is Santo Tomé's 2nd-best season to visit on our travel score. For the whole year in context, see Santo Tomé's year-round climate.
- Avg daytime high
- 27°C
- 2nd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 531 mm
- 32 wet days
- Avg wind
- 13 km/h
- Travel score
- 6.3
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Santo Tomé in Spring
Over the season highs climb from about 24°C in early September to 30°C by late November.
A typical spring day in Santo Tomé reaches about 27°C and drops to 16°C overnight. The warmest of the three months is November, the coolest September.
How spring really feels in Santo Tomé
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
spring sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Santo Tomé weather by month
How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 22° | 160 | 12 | 13.6 | 3.9 |
| Feb | 31° / 21° | 133 | 11.5 | 13 | 4.3 |
| Mar | 30° / 20° | 127 | 10.1 | 12.2 | 5.2 |
| Apr | 27° / 17° | 168 | 10.1 | 11.3 | 6.7 |
| May | 23° / 14° | 121 | 8.4 | 10.6 | 7.1 |
| Jun | 21° / 12° | 115 | 9.4 | 10.2 | 6.5 |
| Jul | 20° / 11° | 117 | 9 | 10.4 | 6.7 |
| Aug | 23° / 12° | 100 | 8.5 | 11 | 7.2 |
| Sep | 24° / 14° | 154 | 10.4 | 11.8 | 7.0 |
| Oct | 27° / 16° | 217 | 12.2 | 12.7 | 6.3 |
| Nov | 29° / 18° | 160 | 9.4 | 13.4 | 5.7 |
| Dec | 31° / 20° | 161 | 10.8 | 13.8 | 4.4 |
Cloud cover in Spring
The sky is clear or mostly clear about 41% of the time across spring.
Chance of precipitation in Spring
Santo Tomé gets around 531 mm of rain over 32 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 13 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 24 min in early September to 13 h 42 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.5 kWh/m².
Is spring a good time to visit Santo Tomé?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Santo Tomé for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Santo Tomé in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Santo Tomé sees daytime highs around 27°C and nights near 16°C. Pack light clothes and sun protection. Worth having: rain gear. About 32 days see rain.
UV index in Santo Tomé in Spring
Clear-sky midday UV across spring averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Santo Tomé peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 4 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 13 | 11 | 8 | 5 | 4 | 4 | 5 | 8 | 6 | 11 | 12 |
| Level | Extreme | Extreme | Extreme | Very high | Moderate | Moderate | Moderate | Moderate | Very high | High | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 11 | Extreme |
| Apr | 8 | Very high |
| May | 5 | Moderate |
| Jun | 4 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | Moderate |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Air quality in Santo Tomé in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Santo Tomé is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (March, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 14 | 6 | 7 | 6 | 7 | 10 | 15 | 16 | 9 | 9 | 6 |
| Level | Good | Moderate | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 14 | Moderate |
| Mar | 6 | Good |
| Apr | 7 | Good |
| May | 6 | Good |
| Jun | 7 | Good |
| Jul | 10 | Good |
| Aug | 15 | Moderate |
| Sep | 16 | Moderate |
| Oct | 9 | Good |
| Nov | 9 | Good |
| Dec | 6 | Good |
Where is Santo Tomé?
Santo Tomé sits at 28.6°S, 56.0°W, 67 m above sea level, in Argentina. The nearest listed city is São Borja, 13 km away.
Topography around Santo Tomé
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santo Tomé.
Within 3 km, the terrain around Santo Tomé has only modest variations in elevation — a maximum elevation change of 47 m around an average of 67 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 78 m; within 80 km, only modest variations in elevation — a maximum elevation change of 203 m.
The land around Santo Tomé is covered by trees (28%) and grassland (27%) within 3 km, grassland (28%), trees (26%) and cropland (20%) within 16 km, and grassland (39%), cropland (22%) and wetland (21%) within 80 km.
Argentina travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / I
- 220 V · 50 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $14,898
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Homicide rate
- 4.5
- per 100k, 2023
- Road deaths
- 14.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 575
- Religion
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 Santo Tomé (-28.551°, -56.0412°, elevation 67 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.