Portsmouth
January
Weather in Portsmouth for January 2025
Your guide to Portsmouth weather in January - trends and predictions
In general, the average temperature in Portsmouth at the beginning of January is 10.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 9 °C by the end of January.
Portsmouth sees moderate rainfall in January, averaging 7 rainy days.
Snowfall in Portsmouth during January is quite rare, with fewer than 2 snowy days on average.
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23
Dry days
7
Rainy days
1
Snow days
10°/2°
Temperatures
35 km/h
Avg max wind
80 %
Avg humidity
Portsmouth in January average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  11° | 2 11° | 3  11° | 4 11° | 5 10° | ||
| 6 9° | 7  8° | 8 6° | 9 6° | 10 8° | 11 8° | 12 9° |
| 13  8° | 14 8° | 15  5° | 16 5° | 17  4° | 18 4° | 19 5° |
| 20 6° | 21 9° | 22 9° | 23 9° | 24 9° | 25 9° | 26 9° |
| 27 7° | 28 8° | 29 10° | 30  10° | 31 10° |
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Temperatures trend during January in Portsmouth
See the weather trend as well as the moving average line
January weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Jan. | Patchy rain possible | 11° /7° | 6.8 mm | 0 cm | |
| 2 Jan. | Patchy rain possible | 11° /7° | 5.5 mm | 0 cm | |
| 3 Jan. | Moderate or heavy rain shower | 11° /8° | 7.3 mm | 0 cm | |
| 4 Jan. | Patchy rain possible | 11° /8° | 6.6 mm | 0 cm | |
| 5 Jan. | Patchy rain possible | 10° /7° | 1.4 mm | 0 cm | |
| 6 Jan. | Patchy rain possible | 9° /5° | 1.1 mm | 0 cm | |
| 7 Jan. | Heavy rain at times | 8° /5° | 3.1 mm | 0 cm | |
| 8 Jan. | Heavy rain at times | 6° /4° | 3.6 mm | 0.1 cm | |
| 9 Jan. | Patchy rain possible | 6° /4° | 0.2 mm | 0 cm | |
| 10 Jan. | Heavy rain at times | 8° /4° | 3.3 mm | 0 cm | |
| 11 Jan. | Moderate rain at times | 8° /4° | 1.3 mm | 0 cm | |
| 12 Jan. | Heavy rain at times | 9° /5° | 5.5 mm | 0 cm | |
| 13 Jan. | Sunny | 8° /4° | 0 mm | 0 cm | |
| 14 Jan. | Moderate or heavy rain shower | 8° /4° | 9.2 mm | 0 cm | |
| 15 Jan. | Overcast | 5° /2° | 1 mm | 0 cm | |
| 16 Jan. | Moderate rain at times | 5° /0° | 6.8 mm | 0 cm | |
| 17 Jan. | Cloudy | 4° /0° | 1.9 mm | 1 cm | |
| 18 Jan. | Overcast | 4° /0° | 0 mm | 0 cm | |
| 19 Jan. | Sunny | 5° /0° | 0 mm | 0 cm | |
| 20 Jan. | Overcast | 6° /3° | 0.1 mm | 0 cm | |
| 21 Jan. | Cloudy | 9° /3° | 5.6 mm | 0 cm | |
| 22 Jan. | Overcast | 9° /3° | 0.9 mm | 0 cm | |
| 23 Jan. | Sunny | 9° /3° | 1.2 mm | 0 cm | |
| 24 Jan. | Sunny | 9° /5° | 0.2 mm | 0 cm | |
| 25 Jan. | Patchy rain possible | 9° /4° | 2 mm | 0 cm | |
| 26 Jan. | Overcast | 9° /4° | 0.9 mm | 0 cm | |
| 27 Jan. | Overcast | 7° /4° | 0 mm | 0 cm | |
| 28 Jan. | Cloudy | 8° /4° | 0 mm | 0 cm | |
| 29 Jan. | Overcast | 10° /7° | 0 mm | 0 cm | |
| 30 Jan. | Partly cloudy | 10° /4° | 0.1 mm | 0 cm | |
| 31 Jan. | Overcast | 10° /4° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Portsmouth in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Portsmouth forecast closer to your planned date for the most up-to-date weather information.
Portsmouth in January - FAQ
What are the expected maximum and minimum temperatures in Portsmouth during January?
Prepare for cooler days with highs just around 10° and colder nights, dipping below 2°.
How much rainfall should be expected in Portsmouth during January?
Significant rainfall exceeding 151.1 mm is expected in Portsmouth during January, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
Is snowfall common in Portsmouth during January?
Portsmouth experiences an average snowfall of 2.1 cm during January, occurring over 1 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Portsmouth during January?
The average wind speed in Portsmouth during January is 35 km/h, suggesting breezy to windy conditions, depending on your activities.
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