We found one dictionary that defines the word to windwards:

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1. to windwards: Vocabulary.com

(Note: See to_windward as well.)

Definitions from WordNet (to windward) ▸ noun:  the side toward the wind ▸ Also see to_windward ▸ Words similar to to windwards ▸ Usage examples for to windwards ▸ Idioms related to to windwards ▸ Wikipedia articles (New!) ▸ Words that often appear near to windwards ▸ Rhymes of to windwards ▸ Invented words related to to windwards