Greenock receives its highest rainfall in October, while humidity peaks during winter months.
🌧️ Wettest:October — 162 mm☀️ Driest:April — 85 mm
💧 Humidity peaks at 93% in December · annual avg 89%
🌍 Climate Summary
Avg Annual Temp:8.4°C
Avg Annual Rainfall:1503 mm
Avg Humidity:89%
Data Period:1981 – 2025
📈 Yearly Trends
The warmest year in Greenock's recorded history was 2025
(avg: 9.7°C),
while the coldest year was 2010
(avg: 6.9°C).
📊 Key Climate Trends
🌡️ Greenock's temperature shows a slight warming trend over the past decade
📊 Minimum temperatures have remained largely stable across the dataset
🌧️ Rainfall has decreased in recent years compared to earlier periods
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °C
Greenock's temperatures shows a slight warming trend over the past decade.
The highest recorded temperature reached
25.2°C in June 2018,
while the lowest dropped to
-11.7°C in January 1982.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Greenock shows noticeable variation. Rainfall has decreased in recent years compared to earlier periods.
Based on 45 years of data (1981–2025), July is typically the hottest month in Greenock, Scotland, with average high temperatures around 21.4°C.
What is the coldest month in Greenock?▼
January is the coldest month in Greenock, with average low temperatures around -2.5°C.
What is the rainiest month in Greenock?▼
October receives the most rainfall with approximately 162 mm, while April is the driest with 85 mm.
What was the highest temperature ever recorded in Greenock?▼
The highest recorded temperature was 25.2°C in June 2018. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Greenock?▼
The lowest recorded temperature was -11.7°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 Greenock get?▼
Greenock receives the most sunlight in June with an average solar radiation of 4.85 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in Scotland.
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.