Coleraine in Fall
In fall (September, October and November), Coleraine sees average daytime highs around 12°C and overnight lows near 10°C, with 388 mm of precipitation over about 56 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 15°C in early September to 10°C by late November. The sky is clear or mostly clear about 8% of the time across fall, and the air most often feels dry.
Fall is Coleraine's 2nd-best season to visit on our travel score. Coleraine 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 Coleraine's year-round climate.
- Avg daytime high
- 12°C
- 2nd-warmest season
- Avg overnight low
- 10°C
- Precipitation
- 388 mm
- 56 wet days
- Avg wind
- 28 km/h
- Travel score
- 2.6
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Coleraine in Fall
Over the season highs ease from about 15°C in early September to 10°C by late November.
A typical fall day in Coleraine reaches about 12°C and drops to 10°C overnight. The warmest of the three months is September, the coolest November.
Coleraine weather by month
How the three fall 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / 6° | 124 | 20.3 | 0.6 | 7.5 | 1.0 |
| Feb | 8° / 5° | 100 | 16.9 | 1 | 9.2 | 0.9 |
| Mar | 8° / 6° | 91 | 16 | 0.8 | 11.4 | 1.1 |
| Apr | 9° / 7° | 78 | 13.9 | 0.2 | 13.8 | 1.6 |
| May | 11° / 9° | 71 | 13.4 | 0 | 15.8 | 2.3 |
| Jun | 13° / 11° | 86 | 14.6 | 0 | 17 | 2.9 |
| Jul | 14° / 13° | 95 | 16.1 | 0 | 16.5 | 3.5 |
| Aug | 15° / 13° | 104 | 16.2 | 0 | 14.7 | 3.7 |
| Sep | 14° / 12° | 101 | 16.3 | 0 | 12.5 | 3.5 |
| Oct | 12° / 10° | 139 | 18.9 | 0 | 10.2 | 2.6 |
| Nov | 10° / 8° | 149 | 20.8 | 0.2 | 8.1 | 1.7 |
| Dec | 9° / 6° | 147 | 20 | 0.7 | 7 | 1.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 8% of the time across fall.
Chance of precipitation in Fall
Coleraine gets around 388 mm of rain and snow over 56 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 28 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 36 min in early September to 7 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 1.6 kWh/m².
Is fall a good time to visit Coleraine?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Coleraine.
What to pack for Coleraine in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Coleraine sees daytime highs around 12°C and nights near 10°C. Pack a warm layer, rain gear and a windbreaker. About 56 days see rain.
Sea temperature near Coleraine in Fall
The nearest coast averages about 13°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 27 km away) is warmest in September at about 14°C and coldest in March near 8°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 9 | 8 | 8 | 8 | 9 | 11 | 13 | 14 | 14 | 13 | 12 | 10 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 9 | Bracing |
| Feb | 8 | Bracing |
| Mar | 8 | Bracing |
| Apr | 8 | Bracing |
| May | 9 | Bracing |
| Jun | 11 | Bracing |
| Jul | 13 | Bracing |
| Aug | 14 | Bracing |
| Sep | 14 | Bracing |
| Oct | 13 | Bracing |
| Nov | 12 | Bracing |
| Dec | 10 | Bracing |
UV index in Coleraine in Fall
Clear-sky midday UV across fall averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Coleraine peaks around July 12 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 5 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 0 | 1 | 2 | 3 | 5 | 5 | 5 | 4 | 3 | 2 | 1 | 0 |
| Level | Low | Low | Moderate | Moderate | High | Moderate | High | Moderate | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 0 | Low |
| Feb | 1 | Low |
| Mar | 2 | Moderate |
| Apr | 3 | Moderate |
| May | 5 | High |
| Jun | 5 | Moderate |
| Jul | 5 | High |
| Aug | 4 | Moderate |
| Sep | 3 | Moderate |
| Oct | 2 | Low |
| Nov | 1 | Low |
| Dec | 0 | Low |
Where is Coleraine?
Coleraine sits at 55.1°N, 6.7°W, 5 m above sea level, in United Kingdom. The nearest listed city is Ballymena, 39 km away.
Topography around Coleraine
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Coleraine.
Within 3 km, the terrain around Coleraine has only modest variations in elevation — a maximum elevation change of 82 m around an average of 30 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 385 m; within 80 km, large variations in elevation — a maximum elevation change of 675 m.
The land around Coleraine is covered by grassland (54%) and trees (22%) within 3 km, grassland (57%) and water (24%) within 16 km, and grassland (46%) and water (46%) within 80 km.
United Kingdom travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type D / G / M
- 230 V · 50 Hz
- Prices
- ≈ 89% of US
- price level, 2025
- GDP per capita
- $57,602
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2021
- Road deaths
- 3.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- 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 Coleraine (55.1333°, -6.6667°, elevation 5 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.