|Describes features that depend on seasonal conditions|
|Used on these elements|
|Status: de facto|
|Tools for this tag|
Used to denote features which appear or disappear with differing seasonal conditions:
Wetlands can dry out in the summer, ponds can disappear entirely in hot weather and rural roads might close from the first snow until thaw. This tag is also used on benches, picnic tables and other amenities that are not available during winter.
For shops such as grocers, farmer's markets or marketplaces, it is more precise to use opening_hours=* (opening hours by months), if possible.
|seasonal=no||It's not seasonal. Useful if it is not seasonal although it may be expected to be (for instance a road that is not seasonal in an area with a lot of seasonal roads)|
|seasonal=spring/summer/autumn/winter/wet_season/dry_season/...||Implies seasonal=yes for that season. Note these values can be ambiguous for features that that vary between different states since it can be unclear which state occurs at which time of the year.
Relation to intermittent
intermittent=yes marks (usually water-based) features as non-permanent. When seasonal=* is not no, it suggests itself to imply that intermittent=* is yes, so there is an obvious overlap with this tag.
intermittent=* however has been in use for longer and is 10x as popular as this tag (as of 2022-04), so it is more likely to be used and supported by data consumers. This will be the reason why as of 2022-04, about 60% of elements tagged with seasonal=* are also tagged with intermittent=*.
- Conditional restrictions could be used to give approximative opening dates. Ex: access:conditional=no @ Nov-Apr.
- Proposed features/Dry weather
Possible tagging mistakes
- intermittent=*, for water features that are non-permanent.
- opening_hours=*, for amenities that open/close based on dates (rather than seasonal conditions).
- xmas:feature=*, similar to seasonal=christmas
- temporary=* for temporary features