Originally Posted by AlwaysAisle

Each aircraft has different performance specifications and even within the same model of aircraft this performance specification can change slightly due to options.

The general rule of thumb for today's commercial jet aircraft is that the maximum allowable tailwind is 15 knots (8 meters/second) and the maximum allowable crosswind is 35 knots (20 meters/second) for takeoff. This is wind only and when the runway is wet then the number will go down. For example, on 737 when the runway is wet, the maximum allowable crosswind will go down to 15 knots (8 meters/second). This is not the reference used in Japan only, but in the U.S. and Europe also.

Yesterday on the 16th, HND was measuring 8.8 m/s wind with 6.0 mm/hr of rain at 6 a.m. Wind steadily increased throughout the day, at 9 a.m. 10.7 m/s wind with no rain. At 11 a.m. measured heaviest rain of 14.0 mm/hr with 11.5 m/s wind. The strongest wind of the day was measured at 6 p.m. with 14.1 m/s with rain of 2.0 mm/hr. At 11 p.m. the wind was still 11.8 m/s with rain of 1.0 mm/hr. Throughout the day, the wind was toward north to north-north-east. Tailwind condition for usual north takeoff at HND. This is not looking at gust winds highly likely occurring throughout the day.

I will not consider airlines to be a wuss for canceling flights at HND on the 16th.