To prevent condensation in your tent while you're away, here's some recommendations:
- Open internal weatherproof vents
- Guy out external window flaps or ground level vents to allow airflow
- Position your tent so that the prevailing wind will assist with air flow through your tent helping to minimise condensation
- In wet humid weather, be aware that wet gear will increase the amount of condensation in your tent so (if possible) store wet gear outside the tent