Nefyn Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Nefyn, Gwynedd, United Kingdom. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's explore the details to provide you with a complete overview.
Nefyn experiences significant rainfall throughout the year, averaging 1690 mm (67 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The climate in Nefyn shows significant variation throughout the year. Expect 206 mm (8.1 in) of precipitation during the wettest month November, distributed over 20 rainy days.
In contrast, May offers drier and sunnier days, with around 89 mm (3.5 in) of rainfall over 15 rainy days.
November, the wettest month, has a maximum daytime temperature of 12°C (54°F). The city receives 42 hours of sunshine in this period. During the driest month May you can expect a temperature of 14°C (57°F). For more detailed insights into the city's temperatures, visit our Nefyn Temperature page.
Annual Rainfall in the United Kingdom: City Comparison
The map below shows the annual precipitation across the United Kingdom. You can also select the different months in case you are interested in a specific month.
heavy rainfall
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Nefyn vs World: Rainfall Compared
Nefyn's average annual precipitation is 1690 mm (67 in). Let's compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Nefyn's weather, including sunshine hours, humidity levels, and temperature data, visit our Nefyn Climate page.
