Super Typhoon Rammasun, which hit the Philippines and China last month, is the costliest weather event of the year so far, according to Impact Forecasting.

The storm killed 206 people and injured hundreds more, the Aon Benfield catastrophe modeller says.

In the Philippines economic damage totalled $US250 million ($268 million), while in China 272,000 homes were hit amid economic losses of $US6.25 billion ($6.71 billion). Some $US6.2 million ($6.65 million) of losses were reported in Vietnam.

Meanwhile, major flooding last month led to severe damage across Asia and Europe.

Monsoon rains in southern China left 102 people dead or missing. About 90,000 homes were damaged, with economic losses of $US1.8 billion ($1.93 billion).

Three people died as thunderstorms hit Bulgaria, Romania, the Netherlands, the UK, Switzerland, Slovakia and Croatia.

Overall economic losses in Europe were expected to top $US135 million ($145 million), with preliminary insured losses at nearly $US20 million ($21.5 million).

Head of Impact Forecasting Adam Podlaha says floods are consistently among the most costly natural perils, with three of the past five years experiencing global losses above the 10-year average of $US47 billion ($50.4 billion).

Also last month, a magnitude-6.9 earthquake struck Mexico’s Chiapas state, killing nine people and causing more than $US25 million ($26.8 million) of economic damage.

Washington state’s Carlton Complex fire became the largest wildfire in the region’s history, killing one person and destroying 300 homes.