Hike out and have lunch in San Gerardo de Rivas. Transfer to San Jose. Snacks during the hikes. Bitterly cold winds can exceed 100 kph with wind chilldropping temperatures significantly. Rain is always a possibility, especially in mid-afternoon.
Temperatures usually fall to freezing, or below, during the night.
Plastic water bottle - especially for hikes. Personal water filter for filling your water bottle. Good rain poncho, warm clothes, layered, polypropylene to keep warm in damp and cold mountians. Sunscreen and insect repellent. Shirts - cotton, long and short sleeved.