この夏は雷が多かった。

この夏は雷が多かった。

We have had a lot of thunder this summer.

この夏(なつ)は雷(かみなり)が多(おお)かった。

Kono natsu wa kaminari ga ōkatta.

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

夏 (なつ)

summer

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

雷 (かみなり、いかずち、いかづち、らい)

lightning; thunder; thunderbolt; god of thunder; god of lightning; anger; fit of anger

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

多い (おおい)

many; numerous

Readings: カ、ガ、ゲ、なつ

Meaning: summer

Readings: ライ、かみなり、いかずち、いかづち

Meanings: thunder, lightning bolt

Readings: タ、おお.い、まさ.に、まさ.る

Meanings: many, frequent, much