yukagen ga ii.

The bathwater temperature is good.

Breakdown of yukagen ga ii.

• が: subject particle
• いい: good
• 湯加減ゆかげん: the temperature of bathwater

Questions & Answers about yukagen ga ii.

How do you read 湯加減?

It’s read ゆかげん.

• 湯 = ゆ, hot water
• 加減 = かげん, condition, degree, adjustment

Together, 湯加減 means something like the condition/temperature of the hot water, often especially bathwater.

What does 湯加減 mean exactly in this sentence?

In this sentence, 湯加減 refers to how the hot water feels, especially whether it is too hot, too cold, or just right.

So 湯加減がいい means the hot water is in a good state — usually:

• the temperature is good
• it feels comfortable
• it’s just right for bathing

A very natural English translation is The bath temperature is just right or The water feels perfect.

Why is the particle が used here?