ような気がする details

Examples

I have a feeling that; it seems to me — a hunch with no named evidence, more subjective than a reasoned guess

なんか、今日きょうは何なにかいいことが起おこるような気きがするんだよね。

nanka, kyou wa nanika ii koto ga okoru you na ki ga suru n da yo ne.

I feel like something good's going to happen today, you know? casual

前まえにもこの道みちを歩あるいたことがあるような気きがする。

mae ni mo kono michi o aruita koto ga aru you na ki ga suru.

I have the feeling I've walked this road before. neutral

このままでは、目標もくひょう達成たっせいは困難こんなんであるような気きがいたします。

kono mama de wa, mokuhyou tassei wa konnan de aru you na ki ga itashimasu.

At this rate, I get the feeling that reaching the goal will be difficult. formal

Na-adjectives often drop よう and attach 気がする directly with な
(なんとなく変へんな気がする), especially in casual speech; nouns keep
のような気がする (雨あめのような気がする).

かもしれない
Both hedge toward "maybe", but ような気がする frames the hedge as a felt hunch with no stated evidence ("something tells me"), while かもしれない states a bare possibility that can rest on hard evidence too — ような気がする skews personal and introspective, かもしれない stays evidence-agnostic.

ようだ
The opening ような invites a misparse as plain ようだ with an extra clause tacked on, but 気がする is the real predicate here — ような気がする reports the SPEAKER'S felt hunch, while ようだ alone reports an inference from outside evidence.