Climate Insights for Ystalyfera

The climate in Ystalyfera is cool. The average annual temperature is 10°C and approximately 1406mm of precipitation falls per year. Ystalyfera receives a notable amount of rainfall throughout the year, including during its driest month. Ystalyfera is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, March, when temperatures can drop to 2°C. Light snow can occur between January and December.

Ystalyfera sees moderate temperature variation throughout the year, ranging from 2°C to 19°C. July is the warmest month, though highs remain moderate at 19°C with a mean of 16°C. February is the coolest month, with minimum temperatures around 2°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.

Ystalyfera is a fairly wet location, receiving approximately 1406mm of precipitation annually, which averages out to around 117mm per month. The wettest month is December, averaging 151mm of rainfall. August and November also tend to see above-average precipitation. The driest month is May, with just 72mm. That's 79mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 26cm annually. December is the snowiest month with approximately 8cm.

Ystalyfera is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

It is currently summer in Ystalyfera, which began on June 21, 2026. Ystalyfera is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 19°C, while the coldest stretch bottoms out in February near 2°C. Autumn is next, beginning on September 23, 2026 — 91 days from now.

The best time to visit Ystalyfera is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 93mm per month. By contrast, February can be quite cold with temperatures dropping to 2°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Ystalyfera based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.