Southampton

Planning your day in Southampton or just want to stay updated on the weather conditions? In this section, you will find the latest weather information, current forecasts, and useful charts.

The climate in Southampton, USA, can be described as temperate with four distinct seasons. The city experiences noticeable temperature fluctuations throughout the year, allowing for a variety of weather conditions. Winters here are cool, while summers are warm and comfortable, making it an attractive destination to visit at different times of the year.

The winter months, from December to February, bring average temperatures ranging from 2.5°C to 5.3°C, with occasional frosts. Spring (March–May) sees a gradual warming as temperatures rise from 5.2°C to 13.6°C. Summer, from June to August, is the warmest season with average temperatures between 19.1°C and 23.5°C, creating ideal conditions for outdoor activities. Autumn (September–November) is characterized by a steady decline in temperature from 20.3°C to 10.0°C. Precipitation is distributed relatively evenly throughout the year, with low monthly totals (2–5 mm) and approximately 8–12 rainy days per month, indicating the absence of a pronounced rainy season.

The climate in Southampton is characterized by noticeable seasonal temperature variations. Throughout the year, residents and visitors can observe the transition from cool winters to warm summers. The coldest months are typically January and February, when average temperatures remain around 2.5°C and 2.9°C, respectively. In January, the average minimum temperature can drop to 0.2°C, while the maximum rarely exceeds 4.8°C. February's figures are very similar: from 0.6°C at night to 5.3°C during the day. The warmest period occurs in July and August. In July, the average temperature reaches 23.5°C (with fluctuations from 21.8°C to 25.2°C), and in August, it is 23.3°C (from 21.7°C to 25.0°C).

The summer months in Southampton, especially July and August, bring pleasant warmth, perfect for outdoor activities. Average maximum temperatures during this time hover around 25°C, and nights stay warm, with minimum temperatures around 21–22°C. The difference between day and night temperatures in summer is not very large, ensuring comfortable conditions around the clock. June is also warm, with an average temperature of 19.1°C, gradually preparing the way for the peak summer heat.

In contrast, winter in Southampton is cool. From December to February, air temperatures drop significantly. In December, the average temperature is 5.3°C, with nightly minimums falling to 3.1°C and daytime maximums reaching 7.5°C. January is the coldest month, when average minimum temperatures approach the freezing point. The transitional seasons—spring and autumn—show a gradual change in temperatures. March (5.2°C) and April (8.9°C) bring warming, while September (20.3°C) and October (15.9°C) mark a smooth transition to cooler weather. Temperature fluctuations between day and night throughout the year average about 3–5°C, indicating a moderate diurnal range.

Precipitation in Southampton is distributed fairly evenly throughout the year, without a distinct rainy or dry season. The total monthly rainfall is low, ranging from 2 to 5 mm. This suggests that even on "wet" days, precipitation is likely to be light rain or drizzle rather than heavy downpours.

The winter months—such as January (average temperature 2.5°C, 4 mm of precipitation), February (2.9°C, 4 mm), and December (5.3°C, 5 mm)—are the coldest. Given the low temperatures, particularly minimums near or below freezing, precipitation during this period can fall as both rain and snow. December sees the highest amount of precipitation (5 mm) and one of the highest numbers of wet days (12). February also has a high frequency of precipitation, with 12 wet days.

In contrast, the summer months are characterized by the least amount of precipitation. June is the driest month, both in terms of total volume (2 mm) and number of wet days (8). July and August each receive 3 mm of precipitation, with 10 and 11 rainy days respectively. In spring and autumn, the amount of precipitation and the number of wet days are at an average level for the city: for instance, April and October each receive 4 mm of precipitation and have 12 wet days, making them some of the most frequent rain months along with the winter period.

Thus, while precipitation in Southampton is low year-round, June is the driest month, and December is the wettest by volume. The frequency of precipitation is highest in February, April, October, and December, when there are about 12 days with precipitation.

When planning a trip to Southampton, it is important to consider the local climate to ensure your stay is as comfortable as possible. Regardless of the time of year, comfortable walking shoes will be your essential companion. Since there are an average of 8 to 12 days with precipitation each month, even with low total amounts, a compact umbrella or a light waterproof jacket will prove very useful. Layering your clothes is an excellent strategy for Southampton, as it allows you to easily adapt to temperature changes throughout the day and between seasons.

In winter (December to February), Southampton is quite cool, with average temperatures hovering around 2–5°C. During this period, you will need warm clothing: sweaters, fleece tops, an insulated jacket, as well as a hat, gloves, and a scarf. Summer (June to August) brings pleasant warm weather with average temperatures of 19–23°C. For the summer months, lightweight natural fabrics such as T-shirts, shorts, and sundresses are ideal. However, don't forget to pack a light sweater or windbreaker for evening walks or air-conditioned indoor spaces. Sunscreen and a hat are also recommended. Spring and autumn weather can be changeable, so layering is especially important: combine T-shirts with cardigans, light sweaters, and a transitional jacket that can protect you from wind and light rain.