Penmachno Temperature by Month

The average annual maximum temperature in Penmachno, Gwynedd, United Kingdom is 13°C (55°F), with daytime highs ranging from 8°C (46°F) in January to 19°C (66°F) in July. This page covers monthly averages, day-night differences, and how Penmachno compares to cities worldwide.

In Penmachno, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 11°C (52°F) in July to 2°C (36°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Penmachno by month:

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 155 hours of sunshine.

The chart below shows the average temperature throughout the year:

Penmachno's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Penmachno this rarely lasts long on the ground.

For more on Penmachno's weather, including monthly rainfall, sunshine hours, and humidity, visit our Penmachno climate page.