Higher Nocturnal Temperatures Shorten and Worsen Sleep with No Clear Evidence of Short-Term Compensatory Patterns

Background & Objectives Rising nighttime temperatures menace sleep, yet evidence from large longitudinal studies combining objective and subjective sleep measures remains limited. Here, we therefore examined associations of nocturnal air and wet-bulb temperature with seven sleep parameters, including possible delayed effects. Methods We analysed wearable-derived and subjective sleep data from 326 home-care workers (270 women) in Switzerland between June and Early October 2025, resulting in 14,290 participant-nights. Nocturnal air temperature and humidity data were obtained from the dense Meteo

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