Why is it light level 15 at night?

In Minecraft the light level is at 15 at night, and there isn't any moon out. I'm in a swamp biome (if it makes a difference which biome you are in) and the light level is at 15 (max, as the day).

I've been there in two nights in a row. No monsters are spawning either. I'm playing in a private multiplayer server and monsters is spawning natural (it's not in peaceful). No mods, no plugins, Minecraft Version 1.8.9.

What is happening here? How can I fix this?

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2 Answers

If you want to know how much light it is where you are, don't check in the number in the parenthesis - check the number that is directly after "Light:". It can be hard to see but it's there.

If you read "(15 sky)", that number is always the same if you're outdoors. It will only change if you're indoors.

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In the F3 menu, there are 2 values: block light, and sky light. Sky light refers to what the light level is during the day. In the open, this will always be 15. Block light refers to the light level of that block at night, which if there are no light sources around, should be 0.

The fact that no mobs were spawning in that area is likely a coincidence, but could also be related to the fact that mobs will not spawn within a certain radius of the player.

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