January Weather in Porthmadog

Last updated: March 2, 2024

The weather in Porthmadog, United Kingdom, during January is characterized by an average temperature of 6°C (43°F). Highs can soar to 10°C (51°F), while lows may dip to 0°C (32°F). Typically, the humidity level in Porthmadog throughout January hovers around 89%.

0°C (32°F)

Minimum temperature

6°C (43°F)

Average temperature

10°C (51°F)

Maximum temperature

89%

Humidity

Precipitation and Sunshine hours

In January, Porthmadog averages 121 mm (4.8 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 8 hours 10 minutes of daylight, with the sun shining for approximately 2 hours 59 minutes each day. Additionally, there is a 20% probability of sunny days during this period.

121 mm (4.8 inches)

Precipitation

16 rainy days

Rainy days

2 hours 59 minutes

Sunshine hours

20%

Chance of sun

UV Index

In January, the UV Index in Porthmadog reaches a maximum of 1, indicating a level of Low exposure. The most intense UV radiation typically occurs between 09:00 and 11:00, during which unprotected skin may burn in as little as 45 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 0 0 1 1 1 1 1 1 1 1 0 0 0
Exposure Low
Time to burn 45 min

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