Parts of Pleasure Island Family Theme Park in Cleethorpes were inaccessible to the public due to surface water flooding, manager Neil Ireland said.
He added that no major damage had been caused but high winds and rain also meant some of the park's rides would not have been able to run.
The park is expected to reopen to the public on Tuesday.

It also saw £400m of instant access savings cash being withdrawn in a period that saw it being put up for sale before a rescue deal was agreed.
However, half-year losses narrowed to £135.2m from £177m last year.
In June, the Co-operative Bank agreed a £700m rescue package to stop itself from being wound up.
The bank said that the deal was progressing to plan and was "on track" to be completed by September.
The Co-op Bank was rescued from the brink of collapse by a group of hedge funds in 2013, after bad property loans contributed to a £1.5bn hole in its finances.
In February this year, the bank was put up for sale after it was unable to reach a strong enough financial footing to satisfy Bank of England regulations.
However, the sale plan was dropped after its existing investors agreed to a rescue deal, which will see them swap their debt for a stake in the bank. The Co-op Group's stake in the bank will fall from 20% to about 1%.
Chief executive Liam Coleman said the completion of the restructuring would "secure the future of the Co-operative Bank as a viable stand-alone entity".
He also said that trading in the first half of the year had been "resilient", given the backdrop of the talks over the bank's future.
Although the bank had lost current accounts, the fall was less than 2% of its total, and it still had 1.4 million current account customers.
"The vast majority of customers have remained very loyal as we have progressed the sale and capital raise process and I am extremely grateful for their ongoing support," Mr Coleman said.
"Of course there is more hard work ahead, and, like other banks, we recognise there are risks to the UK economy, but this is a great bank and we are positive about the future."

Nazimuddin Samad was hacked with machetes at a traffic junction late on Wednesday and then shot, police said.
The 28-year-old was reported to have been an organiser of the Ganajagran Manch, a secular campaigning group.
A string of prominent secular bloggers have been attacked or killed by religious extremists in Bangladesh in the last year.
Bangladesh is officially secular but critics say the government has failed to properly address the attacks.
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Police said three assailants on a motorcycle attacked Mr Samad and then shot him, The Dhaka Tribune reported.
Police have not named any suspects in the case nor confirmed a religious motive.
Mr Samad, a student of Jagannath University, regularly wrote against religious extremism on his Facebook page.
He had written "I have no religion" on his profile under religious views.
There have been several deadly attacks in Bangladesh in recent months, although it is not clear who is behind them.
Last year, four prominent secular bloggers were killed with machetes, one inside his own home.
They all appeared on a list of 84 "atheist bloggers" drawn up by Islamic groups in 2013 and widely circulated.
There have also been attacks on members of religious minorities including Shia, Sufi and Ahmadi Muslims, Christians and Hindus.
Two foreigners, an Italian aid worker and a Japanese man, were also shot dead late last year, in seemingly random attacks.
The so-called Islamic State group has said it carried out many of the attacks - but this has not been independently verified.
Members of another militant Islamist group, the Jamaat-ul Mujahideen Bangladesh (JMB), were arrested over an assault on an Italian Catholic priest late last year.
Heavy rain and surface water flooding have forced a theme park in Lincolnshire to close.
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The Co-operative Bank has said it lost about 25,000 current accounts during the first half of the year amid the uncertainty over its future.
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A Bangladeshi law student who had expressed secular views online has been killed in the capital, Dhaka.