Ocean State Forecasts (OSF) contribute to safe and sustainable fishing, but forecast usage among artisanal fishers is often limited. Our research in Thiruvananthapuram district in the southern Indian state of Kerala tested forecast quality and value, and how fishers engage with forecasts. In two fishing villages, we verified forecast accuracy, skill and reliability by comparing forecasts with observations during the 2018 monsoon season (June – September; n=122). We assessed forecast value by analyzing fishers’ perceptions of weather and risks and the way they used forecasts–based on 8 focus group discussions, 20 interviews, conversations and logs of 10 fishing boats. We find that while forecasts are mostly accurate, inadequate forecasting of unusual events (e.g., wind >45 kmph) and frequent fishing restrictions (n= 32) undermine their value. While fishers seek more localized and detailed forecasts, they do not always use them. Weather forecasts are just one of the tools artisanal fishers deploy; not simply to decide as to whether to go to sea or not, but also to manage potential risks, allowing them to prepare for fishing under hazardous conditions. Instead, their decisions are primarily based on the availability of fish and their economic needs. Based on our findings, we suggest that political, economic and social marginality of south Indian fishers influences the fishers’ perceptions and responses to weather-related risks. Therefore, improving forecast usage requires not only better forecast skill and wide dissemination of tailor-made weather information, but also better appreciation of risk cultures and the livelihood imperatives of artisanal fishing communities.