Mossel Bay in Spring
In spring (September, October and November), Mossel Bay sees average daytime highs around 18°C and overnight lows near 15°C, with 128 mm of rain over about 22 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Over the season highs climb from about 17°C in early September to 20°C by late November. The sky is clear or mostly clear about 47% of the time across spring, and the air most often feels dry.
Spring is Mossel Bay's 3rd-best season to visit on our travel score. Mossel Bay has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Mossel Bay's year-round climate.
- Avg daytime high
- 18°C
- 3rd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 128 mm
- 22 wet days
- Avg wind
- 18 km/h
- Travel score
- 6.4
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Mossel Bay in Spring
Over the season highs climb from about 17°C in early September to 20°C by late November.
A typical spring day in Mossel Bay reaches about 18°C and drops to 15°C overnight. The warmest of the three months is November, the coolest September.
Mossel Bay 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 | 22° / 19° | 37 | 7.5 | 14 | 7.4 |
| Feb | 22° / 20° | 30 | 6.7 | 13.3 | 7.4 |
| Mar | 21° / 19° | 41 | 7.4 | 12.3 | 7.3 |
| Apr | 20° / 17° | 43 | 6.7 | 11.2 | 6.9 |
| May | 19° / 15° | 40 | 6.2 | 10.2 | 6.9 |
| Jun | 17° / 14° | 37 | 6.9 | 9.8 | 6.4 |
| Jul | 17° / 13° | 38 | 7.2 | 10 | 6.1 |
| Aug | 17° / 13° | 47 | 7.6 | 10.7 | 5.9 |
| Sep | 17° / 14° | 33 | 6.5 | 11.8 | 6.1 |
| Oct | 18° / 15° | 43 | 7.4 | 12.9 | 6.5 |
| Nov | 19° / 17° | 52 | 7.7 | 13.8 | 6.7 |
| Dec | 21° / 18° | 35 | 6.8 | 14.2 | 7.2 |
Cloud cover in Spring
The sky is clear or mostly clear about 47% of the time across spring.
Chance of precipitation in Spring
Mossel Bay gets around 128 mm of rain over 22 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 18 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 18 min in early September to 14 h 06 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 5.9 kWh/m².
Is spring a good time to visit Mossel Bay?
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 Mossel Bay for sightseeing.
What to pack for Mossel Bay in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Mossel Bay sees daytime highs around 18°C and nights near 15°C. Pack sun protection. About 22 days see rain.
Sea temperature near Mossel Bay in Spring
The nearest coast averages about 17°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 21 km away) is warmest in January at about 21°C and coldest in August near 16°C.
It's comfortable for a long swim from Dec 15 to Mar 18 — about 3.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 21 | 20 | 18 | 17 | 16 | 16 | 16 | 16 | 17 | 19 | 20 |
| Comfort | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 20 | Refreshing |
| Apr | 18 | Cool |
| May | 17 | Cool |
| Jun | 16 | Cool |
| Jul | 16 | Cool |
| Aug | 16 | Cool |
| Sep | 16 | Cool |
| Oct | 17 | Cool |
| Nov | 19 | Cool |
| Dec | 20 | Refreshing |
UV index in Mossel Bay in Spring
Clear-sky midday UV across spring averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mossel Bay peaks around January 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 10 | 10 | 6 | 4 | 3 | 3 | 4 | 6 | 10 | 11 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 10 | Extreme |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 10 | Extreme |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Where is Mossel Bay?
Mossel Bay sits at 34.2°S, 22.1°E, 43 m above sea level, in South Africa. The nearest listed city is Groot-Brakrivier, 17 km away.
Topography around Mossel Bay
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mossel Bay.
Within 3 km, the terrain around Mossel Bay has only modest variations in elevation — a maximum elevation change of 175 m around an average of 28 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 336 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,504 m.
The land around Mossel Bay is covered by water (70%) within 3 km, water (69%) within 16 km, and water (35%), shrubs (27%) and grassland (22%) within 80 km.
South Africa travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / M / N
- 230 V · 50 Hz
- Prices
- ≈ 41% of US
- price level, 2025
- GDP per capita
- $6,598
- 2025
- Happiness
- 5.0 / 10
- World Happiness, 2025
- Safe drinking water
- 68%
- of population, 2024
- Homicide rate
- 43.7
- per 100k, 2022
- Road deaths
- 22.2
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very high
- EF EPI 602
- 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 Mossel Bay (-34.1831°, 22.146°, elevation 43 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.