Belfast weather forecast September 13 2026 sunny intervals chance of rain mild temperatures

Belfast residents can expect a day of mixed weather today, September 13, 2026, with sunny intervals interspersed with a chance of rain. The day will be relatively mild, with temperatures ranging from a cooler 15 degrees Celsius overnight to a high of 18 degrees Celsius. Humidity levels are expected to be high, reaching 91%, which may make the air feel damp.Belfast Weather TodayToday, September 13, 2026, Belfast will experience a day characterized by sunny intervals. The maximum temperature is forecast to reach 18 degrees Celsius, while the minimum temperature will be around 15 degrees Celsius. The average temperature for the day is expected to be 16.5 degrees Celsius. Wind speeds are predicted to be moderate, with a maximum of 24.14 kph. There is a 20% chance of rain, and precipitation levels are not specified. Humidity will be notably high, at 91%, contributing to a potentially muggy atmosphere despite the sunshine.Pack for Changing ConditionsGiven the mix of sunny spells and the possibility of showers, it would be wise for Belfast residents to be prepared for changing conditions throughout the day. While sunshine is expected, the high humidity suggests that the air will feel moist. Carrying a light waterproof jacket or an umbrella is advisable, especially if venturing out for extended periods. The moderate wind speeds should not cause significant disruption, but it's always good to be aware of the possibility of a breeze. The temperatures are mild, so heavy winter clothing will not be necessary, but layering is recommended to adapt to any fluctuations.Belfast Weather for Upcoming 7 DaysLooking ahead, the weather in Belfast is set to see a shift towards more unsettled conditions. Tomorrow, September 14, the forecast indicates light rain, with temperatures ranging from 13 to 20 degrees Celsius. This trend of unsettled weather appears to continue into the following days. On September 15, residents can expect light showers, with a high of 17 degrees Celsius and a low of 12 degrees Celsius. The pattern of light rain and showers is forecast to persist through September 16, 17, 18, and 19, with daily high temperatures hovering around the mid-teens and lows in the early teens.DateConditionMax Temp (C)Min Temp (C)Avg Temp (C)2026-09-13Sunny intervals181516.52026-09-14Light rain201316.52026-09-15Light showers171214.52026-09-16Light rain161214.02026-09-17Light showers151113.02026-09-18Light showers161214.02026-09-19Light showers161214.0The week ahead in Belfast suggests a period of predominantly showery and rainy weather following today's mixed conditions.Source: Data referenced in this article is taken from the latest World News and Live updates. Download the TOI app.