Based on UK meteorological data (1991–2020), the three wettest months are generally November, December, and October. These autumn and winter months experience the highest average rainfall and the most rainy days, with November often having the highest frequency of rain and December having the highest total volume.
The number of rainy days (with more than 0.25mm of rainfall) is fairly consistent throughout the year, with between 11 and 15 rainy days every month. Overall rainfall is highest in November and August (64mm and 59mm respectively) and is lowest in March and April (37mm each).
July is the wettest month in India. Dust storms are common in the western coast of India. The rainfall starts from the northeastern state; Rajasthan gets a little rainfall throughout the year.
Under the Köppen climate classification, for tropical climates, a wet season month is defined as a month where average precipitation is 60 millimetres (2.4 in) or more. In contrast to areas with savanna climates and monsoon regimes, Mediterranean climates have wet winters and dry summers.
When it rains, it pours: August is the wettest month in Charlotte
What are the 4 months of rainy season?
The Indian Meteorological Department (IMD) designates four official seasons: Winter, from December to early April. Summer or pre-monsoon, from April to June (April to July in north-western India) Monsoon or rainy, from June to September.
Instead of weather systems zipping along a straight, fast track, they bend and loop. Lows (and, later, highs) move more slowly, so any spell, wet or dry, lasts longer. That's the defining change as we move into the second half of September.
The four main types of seasons in temperate regions are Spring, Summer, Autumn (Fall), and Winter, characterized by distinct weather, temperature, and daylight changes due to Earth's tilt as it orbits the Sun, with each lasting about three months. These seasons mark transitions from warm, sunny periods (Summer) to cold, short-day periods (Winter), with Spring bringing new growth and Autumn cooler, stormy weather as the tilt shifts.
The lowest maximum rainfall was recorded in Borno (903.5mm). On the monthly distribution of rainfall in Nigeria, Table 2 indicates that August had the highest mean of 1134.5mm; others include September 1131.1mm and July 1058.6mm.
March: the last hot and relatively dry month. April: temperature cools down and the rain level increases. May: a wet month with temperature dropping. June: the wettest month of the year.
It's much more typical for there to be rain and grey weather this time of year. How cold is it in London during December? Temperatures range from 3°C to 9°C (37°F to 48°F). Humidity and wind can cause temperatures to drop, particularly during the early morning and late evening.
Indian summer monsoon. The Indian summer monsoon typically lasts from June-September (Fig. 58d), with large areas of western and central India receiving more than 90% of their total annual precipitation during the period, and southern and northwestern India receiving 50%-75% of their total annual rainfall.
Climate Central assessed seasonal precipitation patterns over the last 53 water years across the contiguous U.S. Parts of the West and Northwest receive most of their annual precipitation during winter, while the Plains, Upper Midwest, and parts of the Southwest rely far more on summer precipitation.
Overall, the month was warmer, wetter and sunnier than average. Overall, November was warmer, wetter and sunnier than average. UK rainfall was 31% above average for November. The UK total of 162.1mm made it the wettest month of 2025 so far.
A six-season model, often seen in Indian and Bengali traditions, names seasons as Spring (Vasanta), Summer (Grishma), Monsoon (Varsha), Autumn (Sharad), Pre-Winter (Hemant), and Winter (Shishir/Shita), reflecting ecological shifts rather than just temperature. Other systems use ecological terms like prevernal, vernal, estival, serotinal, autumnal, and hibernal for temperate regions, while some tropical areas recognize wet/dry/cool seasons.
Most prominently, the portion of the United States west of the continental divide (the West) typically reaches its climatological coldest day in December, whereas most of the East reaches its seasonal minimum in January.
The season cycle is dictated by the Earth's position in relation to the Sun. Our planet rotates around an axis. We can't see this axis, but we know it's there because it causes fall, summer, spring and winter. Depending on the time of the year, either the Northern or Southern Hemisphere will be closer to the sun.
In the north, the rain season is continuous, giving rain from April until October. Typically a rain will last for a short time, but on some days during the rain season, the entire day can be raining very hard. Always pack accordingly and be prepared for delays when traveling during the rain season.
September 2025 was a wet month for much of the UK, though not enough to trouble any longstanding records, according to provisional Met Office statistics.
There are four main types of rainfall: convective, orographic, cyclonic, and thunderstorms, each with unique characteristics that affect when, where, and how intensely rain falls in different regions around the world.
