Abstract: The effectiveness of wake steering control in wind farms is highly sensitive to fluctuations in wind conditions. Taking a certain offshore wind farm in northern China as an example, the effectiveness of two wake steering control methods considering average wind condition and wind condition fluctuations under different wind condition fluctuation scenarios was analyzed. Results show that wind direction variability has a greater impact on wake control effectiveness than wind speed variations. The control strategy based solely on average wind conditions improves total farm power output only when the wind direction standard deviation is less than 4°, while when the wind direction standard deviation is greater than 6°, the power generation decreases. In comparison, the strategy that accounts for wind condition fluctuations maintains effective wake steering under all variability scenarios and consistently increases power output, demonstrating the critical need to include wind variability in wake control designs.