You might be surprised how little Sun is needed to finish a meal. As a rule of thumb, the Go will cook quickly if you can see a defined shadow from your hand even when overcast, windy and in some cases rainy. If thick clouds are spotty, cooking is still possible, though it will take longer as the stove builds up heat during the sunny periods. We suggest using a weather tracking app like My Radar to help plan and set you up for success!