Winchester

Stay up to date with the latest weather conditions in Winchester. Below you will find current data, forecasts, and helpful weather charts.

The climate in Winchester, like in much of Great Britain, is temperate marine. This means there are no extremes: winters are usually mild and damp, while summers are warm but rarely sweltering. Spring and autumn are classic transitional seasons with changeable weather, shifting between summer warmth and winter chill.

Average annual temperatures in Winchester reflect this temperate nature: in winter, the mercury averages from around +4.9°C (January) to +6.4°C (December), while in the warmest summer months of July and August, average temperatures reach a pleasant +17.7°C and +17.3°C respectively. A characteristic feature of the weather is high humidity and frequent precipitation. Although monthly precipitation totals are low, averaging 2–3 mm according to the data, the number of rainy days per month is quite significant — ranging from 10 (April) to 16 (October). This suggests that Winchester typically sees frequent but usually light rain or drizzle. The highest number of rainy days is usually recorded in March and October.

Winchester enjoys a temperate climate with distinct seasons and a relatively smooth annual temperature cycle, without sharp extremes. The coldest month is typically January, with an average air temperature of around 4.9°C, while the average minimum drops to 2.4°C and the maximum reaches 7.5°C. The warmest month is considered July, with an average temperature of 17.7°C (minimum 13.7°C, maximum 21.7°C), though August also shows similar figures with an average of 17.3°C. Thus, average annual temperatures in Winchester vary within a comfortable range.

Summer months in Winchester are characterized by pleasantly warm weather. In June, July, and August, average daily highs range from 19.9°C to 21.7°C, creating comfortable conditions for outdoor activities. Summer nights remain fresh, with temperatures averaging between 11.6°C and 13.7°C. Winter in the city is mild and cool, without severe frosts. In December and January, average daytime temperatures usually stay within 7.5°C - 8.7°C, while nighttime temperatures drop to 2.4°C - 4.2°C. The difference between day and night temperatures is most pronounced in late spring and summer, reaching about 8–9°C (for example, in May, the difference between the average maximum of 16.7°C and the minimum of 8.1°C is 8.6°C), whereas in winter, these fluctuations are less significant, at around 5°C.

In Winchester, precipitation is distributed relatively evenly throughout the year, with no pronounced rainy or dry season in terms of total volume. Average monthly precipitation remains consistently low at just 2–3 mm. This means that heavy downpours or prolonged rain are not typical for this region; instead, you can expect light drizzle or brief showers.

Despite the low total amount, the frequency of rainy days in Winchester varies. The "wettest" month in terms of the number of days with precipitation is October, when it rains an average of 16 days. Precipitation is also quite frequent in March (15 days) and December (14 days). April, by contrast, stands out as the month with the fewest rainy days — only about 10. In other months, the number of days with precipitation fluctuates between 11 and 12.

Thus, although the total volume of precipitation in Winchester is small, there is a chance of encountering rainy weather year-round. Autumn and early spring months, such as October and March, as well as December, may feel damper due to the higher frequency of rain. Given the average temperatures and extremely low precipitation levels, snow in Winchester is a rare occurrence, and most precipitation falls as rain.

When planning a trip to Winchester, it's essential to consider the changeable British weather. Regardless of the season, layering should be your key packing principle. The weather here can change throughout the day, so being able to easily add or remove a layer will come in handy. Be sure to bring comfortable waterproof shoes, as rain is quite frequent, though usually not too heavy. A compact umbrella or a lightweight waterproof jacket will also be your faithful companions.

In the summer months (June–August), when average temperatures hover around 15–18°C and highs can reach 21°C, you'll need lightweight clothes: T-shirts, shirts, shorts, or light trousers. However, don't forget a sweater or cardigan for cool evenings. Sunscreen and a hat will be useful on clear days. In spring (March–May) and autumn (September–October), the weather is cooler, with average temperatures between 7°C and 15°C. During this period, it's worth bringing jeans, jumpers, a fleece, and a mid-season jacket. October stands out for its high number of rainy days, making waterproof clothing particularly relevant.

In winter (November–February), Winchester is quite chilly, with average temperatures staying around 4–8°C. You'll need a warm jacket or coat, a hat, scarf, and gloves. Although severe frosts are rare here, the dampness and wind can make it feel colder. Warm sweaters and trousers, along with thermal underwear for those particularly sensitive to the cold, will make your stay comfortable. Remember that even in winter, the number of rainy days remains significant, so waterproof outerwear and footwear are still important.