Adventure travelers should be careful of the risk of unexpected typhoons. Their frequency and intensity vary every season. Typhoons originating from the pacific always end up hitting the Philippines. This happens most in August and September and mostly, northern part of the country is vulnerable. Trekkers and mountaineers should first consult the PHIVOLCS or the Phil Institute of Volcanology and Seismology before climbing volcanoes. It is always prohibited for climbing when recorded active. Thus any adventure seekers must always consider the weather and the risks it can pose.