Brussels, 20 August (Brussles Morning Newspaper) Belgium’s spell of high-summer heat is effectively over, with August rain and more unsettled conditions expected to shape the rest of the month. Temperatures have already fallen sharply from last week’s highs, while forecasts show little sign of another prolonged hot spell before September.
Belgium leaves the intense heat behind
The difference is already being felt. Brussels is forecast to reach around 22C on Thursday, with temperatures falling to about 14C overnight. Sunny intervals are expected, but showers remain possible during the afternoon.
It is a marked change from the exceptional heat earlier in August.
Belgian forecasting analysis published last week pointed to temperatures gradually returning to more typical seasonal levels after the final burst of exceptional warmth. It also indicated that conditions would become increasingly changeable as the month progressed.
For anyone hoping for another lengthy run of hot, dry beach weather before the summer holidays end, the outlook is therefore less promising. There may still be warm and sunny intervals, but the broader pattern has changed.
August rain becomes a bigger part of the forecast
From Friday onwards, forecasting models have pointed towards a distinctly wetter period, with heavier cloud, showers and locally moderate rainfall possible.
One Belgian multi-model analysis suggested rainfall totals could reach between five and 20 litres per square metre within 24 hours in some areas during the unsettled period. That wetter pattern could continue through much of the final week of August, although the precise location and intensity of rainfall will vary.
MeteoBelgique’s seasonal outlook similarly expects the second half of August to become more changeable, while still forecasting the month as warmer than the long-term norm overall.
Rain brings relief after damaging wildfire
The change comes at an important moment for Belgium after extreme heat and dry conditions contributed to serious fire danger.
Belgium has been battling its largest recorded wildfire in the High Fens nature reserve, where around 3,000 hectares had burned by 17 August. Reuters reported that rainfall provided some relief to roughly 500 firefighters, soldiers, farmers and other personnel involved in tackling the blaze.
Officials have nevertheless warned that the fire has reached deep peat, meaning some areas could continue smouldering beneath the surface even after rainfall.
The wetter weather is therefore welcome in fire-affected areas, even if it brings a less attractive ending to August for holidaymakers.
A different end to the summer holidays
For residents and tourists, the biggest change will be the loss of predictable high-summer weather. Outdoor plans are likely to depend increasingly on short-term forecasts as showers alternate with drier and brighter periods.
Temperatures around the low 20s in Brussels are considerably more comfortable than the intense heat experienced earlier in the month, but the trade-off will be more cloud and a greater chance of getting caught in the rain.
What to expect through the rest of August
Current forecasts do not indicate a return to sustained extreme heat. Instead, August rain, showers and temperatures nearer seasonal norms are expected to dominate the broader pattern.
That does not rule out occasional warm, sunny days. Belgian weather can change quickly, and longer-range forecasts inevitably become less certain further ahead.
For now, however, the message from the available forecasts is clear: Belgium’s hottest stretch of summer has passed, and the final days of August are looking much wetter.
