Small Pet Health
Guinea Pig Winter Care UK — Keeping Cavies Warm
Published Last updated 1 min read
Quick answer
Guinea pigs belong indoors in UK winter. Outdoor hutches are unsafe in cold and damp. Provide deep hay, hideaways, and a draft-free room at stable household temperature. Sneezing, lethargy, or not eating needs same-day vet care.
Why outdoor winter fails
According to the RSPCA and PDSA, guinea pigs are not suited to outdoor hutches in UK winter. They come from mild climates, and frost, damp, and wind can lead to respiratory illness and hypothermia much faster than in rabbits.
Indoor setup
- Cage off cold floor — raise on stand
- Avoid direct heat from radiators (overheating risk)
- Deep hay for nesting and digestion
- At least two guinea pigs for social warmth
Warning signs
- Sneezing or nasal discharge
- Shivering, hunched posture
- Reduced appetite — vet same day
Sources & further reading
Facts in this guide are rewritten in plain English from publicly available UK advice. We name the organisation where a specific point comes from their guidance. Links below go to the original pages — use them to read the source material directly.
PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Guidance checked against sources listed below (last updated 2026-06-25).
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Frequently Asked Questions
- Can guinea pigs live outside in winter UK?
- No — guinea pigs should be housed indoors in the UK. They tolerate cold poorly and can develop respiratory illness or hypothermia in outdoor hutches.
- What temperature is too cold for guinea pigs?
- They are comfortable around 17–20°C indoors. Prolonged exposure below roughly 15°C without warm dry bedding increases illness risk — keep them in a heated home.
- How do I keep guinea pigs warm indoors?
- Draft-free room, deep hay bedding, hide houses, bonded pairs huddling, and avoid placing cages on cold floors or next to single-glazed windows.