We provide novel evidence on the role of firms’ banking relationships with government banks (GOBs) during a climate-related shock when relief funds are unavailable. Using variation in the locations of rainfall shocks and firms’ banking relationships, we find that firms maintaining exclusive banking relationships with GOBs (GOB firms) secure more debt relative to other firms during rainfall shocks. We do not find such effects for firms that maintain exclusive relationships with private banks, foreign banks, or maintain multiple banking relationships. We also find that GOB relationships are particularly beneficial for firms that are more vulnerable to rainfall shocks, have long-term relationships with GOBs, and are, at the same time, healthier compared to other firms. With regard to real effects, GOB firms invest more and remain profitable than other firms during rainfall shocks. Overall, our results highlight the benefits of GOB relationships for firms during climate shocks.