Bangor receives its highest rainfall in December, while humidity peaks during winter months.
🌧️ Wettest:December — 143 mm☀️ Driest:May — 69 mm
💧 Humidity peaks at 87% in December · annual avg 85%
🌍 Climate Summary
Avg Annual Temp:10.8°C
Avg Annual Rainfall:1212 mm
Avg Humidity:85%
Data Period:1981 – 2025
📈 Yearly Trends
The warmest year in Bangor's recorded history was 2025
(avg: 12.4°C),
while the coldest year was 1986
(avg: 9.2°C).
📊 Key Climate Trends
🌡️ Bangor's temperature shows a slight warming trend over the past decade
📈 Minimum temperatures show a slight warming trend in recent years
🌧️ Rainfall varies year-to-year without a clear long-term trend
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °C
Bangor's temperatures shows a slight warming trend over the past decade.
The highest recorded temperature reached
26.4°C in August 2022,
while the lowest dropped to
-4.6°C in January 1982.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Bangor shows noticeable variation. Rainfall varies year-to-year without a clear long-term trend.
Based on 45 years of data (1981–2025), July is typically the hottest month in Bangor, Wales, with average high temperatures around 21.5°C.
What is the coldest month in Bangor?▼
February is the coldest month in Bangor, with average low temperatures around 1.1°C.
What is the rainiest month in Bangor?▼
December receives the most rainfall with approximately 143 mm, while May is the driest with 69 mm.
What was the highest temperature ever recorded in Bangor?▼
The highest recorded temperature was 26.4°C in August 2022. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Bangor?▼
The lowest recorded temperature was -4.6°C in January 1982.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Bangor get?▼
Bangor receives the most sunlight in June with an average solar radiation of 5.36 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in Wales.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.