Yes, hamsters can be quite noisy at night.
Hamsters are typical nocturnal animals, and their peak activity period usually falls between 10 p.m. and 2 a.m. Here are the main reasons why hamsters are noisy at night and possible solutions:

1. Reasons for Hamsters' Noisiness at Night
Running on the Wheel: Hamsters love to exercise on the running wheel, which is one of their main ways of being active at night. However, the rotation of the running wheel may generate noise.
Biting the Cage: If the cage is too small, hamsters may bite the cage due to anxiety, producing harsh sounds.
Digging Wood Shavings or Bathing Sand: Hamsters have an innate love for digging, and they will also make noise when digging wood shavings or bathing sand.
2. How to Reduce Hamsters' Nighttime Noise
Replace with a Quiet Running Wheel: Wooden running wheels are generally quieter than plastic ones. Also, avoid using grid running wheels to prevent hamsters from getting injured.
Expand the Cage Space: Providing a larger cage can reduce the hamsters' anxiety, thus reducing the behavior of biting the cage.
Adjust the Lighting Environment: Provide soft light during the day and keep the environment dark at night, which helps hamsters develop a normal biological clock and reduces their nighttime activities.
Use Noise Reduction Materials: Stick cushion pads or soft cardboard on the running wheel, or place medical tape at the buckle of the cage, which can effectively reduce the noise.
3. Precautions
Pay Attention to the Hamsters' Health: If a hamster is abnormally active or reluctant to move at night, it may be a sign of physical discomfort, and it is necessary to seek medical attention in a timely manner.
Avoid Excessive Intervention: Although you can try to adjust the hamsters' daily routine, excessive intervention may affect their natural behavior.
By using the above methods, you can effectively reduce the nighttime noise of hamsters, allowing both you and the hamsters to enjoy a quiet night.